using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Drawing;
using System.Xml;
using System.IO;

namespace SysBaseLibs
{
    public class rsQuery
    {
        public rsQuery()
        {
            this._backendTableName = "";
            this._QueryCriteria = "";
            //this._LastRecordId = 0;
            this._RecordsPerPage = 1;
            this._SortString = "";
            this._lFireRecordMoved = true;
            this._lColumnChanged = true;
            this._tableName = "TAble" + AppEnv.GetRandom();
            this.ClearEnvironment();
        }

        #region Events

        public event evDataOperationRequested AfterAddingNewRecord;
        public event evDataOperationRequested AfterSavingOfData;
        public event evDataOperationRequested BeforeAddingNewRecord;
        public event evDataOperationRequested BeforeRecordMoved;
        public event evDataOperationRequested BeforeSavingOfData;
        public event evFieldValueChanged FieldValueChanged;
        public event evRefreshRequested QueryOpened;
        public event evRefreshRequested RefreshRequested;


        #endregion

        #region Fields
        protected int _CurrentIndex;
        private string _CustomDefaultColumns;
        private string _CustomDefaultValues;
        //protected int _LastRecordId;
        private bool _lColumnChanged;
        private bool _lFireRecordMoved;
        protected DataTable _myDataTable;
        protected string _QueryCriteria;
        private int _RecordsPerPage;
        private string _SortString;
        protected string _sql;
        protected string _tableName;
        public evRecordMoved RecordMoved;
        protected string _backendTableName;
        protected DBConnSql  _DBConn = null;
        private DataSet _DataSet = null;


        #endregion

        #region Properties
        public string AllFields
        {
            get
            {
                string text1 = "";
                foreach (DataColumn column1 in this.Columns)
                {
                    text1 = UtilStr.AppendToStr(text1, column1.ColumnName);
                }
                return text1;
            }
        }

        public string DisplayColumns
        {
            get
            {
                string text1 = "";
                foreach (DataColumn column1 in this.Columns)
                {
                    string lcStr = column1.ColumnName + ":" + column1.MaxLength;
                    text1 = UtilStr.AppendToStr(text1, lcStr);
                }
                return text1;
            }
        }

        public string BackendTableName
        {
            get { return _backendTableName; }
        }

        public bool Changed
        {
            get
            {
                bool lbRetVal = false;
                if (this._myDataTable != null)
                {
                    DataTable loTable = this._myDataTable.GetChanges();
                    lbRetVal = loTable != null;
                }
                return lbRetVal;
            }
        }


        public DataColumnCollection Columns
        {
            get
            {
                return this._myDataTable.Columns;
            }
        }


        public DataRow CurrentRow
        {
            get
            {
                DataRow loRetVal = null;
                if (((this._CurrentIndex != -1) && (this._myDataTable != null)) && (this._CurrentIndex < this._myDataTable.DefaultView.Count))
                {
                    loRetVal = this._myDataTable.DefaultView[this._CurrentIndex].Row;
                }
                return loRetVal;
            }
        }


        public DataTable CurrentTable
        {
            get
            {
                return this._myDataTable;
            }
        }


        public bool IsNewRow
        {
            get
            {
                bool lbRetVal = false;
                if (this.CurrentRow != null)
                {
                    lbRetVal = this.CurrentRow.RowState == DataRowState.Added;
                }
                return lbRetVal;
            }
        }


        public bool IsOpened
        {
            get
            {
                return (this._myDataTable != null);
            }
        }


        public bool IsToFireColumnChanged
        {
            get
            {
                return this._lColumnChanged;
            }
            set
            {
                this._lColumnChanged = value;
            }
        }


        public bool IsToFireRecordMovedEvent
        {
            get
            {
                return this._lFireRecordMoved;
            }
            set
            {
                this._lFireRecordMoved = value;
            }
        }


        public object this[string pcColumnName]
        {
            get
            {
                object loRetVal = "";
                if (this._myDataTable.Columns.Contains(pcColumnName) && (this.CurrentRow != null))
                {
                    loRetVal = this.CurrentRow[pcColumnName];
                }
                return loRetVal;
            }
        }


        public int PageCount
        {
            get
            {
                int liRetVal = this.RecCount / this.RecordsPerPage;
                if ((this.RecCount % this.RecordsPerPage) != 0)
                {
                    liRetVal++;
                }
                return liRetVal;
            }
        }


        public int PageNo
        {
            get
            {
                int liRetVal = 1;
                if (this._RecordsPerPage > 0)
                    liRetVal = (this.RecNo / this.RecordsPerPage) + 1;
                return liRetVal;
            }
            set
            {
                int num1 = 1;
                if (value > 0)
                {
                    num1 = ((value - 1) * this.RecordsPerPage) + 1;
                    if (num1 > this.RecCount)
                    {
                        num1 = this.RecCount;
                    }
                    int num2 = this.RecNo;
                    this.Go(num1 - 1);
                    if (this.RowIndexInPage(num2) != -1)
                    {
                        this.Go(num2);
                    }
                }
            }
        }


        public string QueryCriteria
        {
            get
            {
                return this._QueryCriteria;
            }
            set
            {
                this._QueryCriteria = value;
            }
        }


        public int RecCount
        {
            get
            {
                if (this._myDataTable != null)
                {
                    return this._myDataTable.DefaultView.Count;
                }
                return -1;
            }
        }


        public int RecNo
        {
            get
            {
                if ((this._CurrentIndex < 0) | (this._CurrentIndex >= this.RecCount))
                {
                    return -1;
                }
                return this._CurrentIndex;
            }
            set
            {
                this.Go(value);
            }
        }


        public int RecordsPerPage
        {
            get
            {
                return this._RecordsPerPage;
            }
            set
            {
                this._RecordsPerPage = value;
            }
        }


        public DataRowCollection Rows
        {
            get
            {
                return this._myDataTable.Rows;
            }
        }


        public string SortString
        {
            get
            {
                return this._SortString;
            }
        }

        public DataSet MyDataSet
        {
            get
            {
                if (this._myDataTable != null)
                    this._DataSet = this._myDataTable.DataSet;
                return this._DataSet;
            }
            set
            {
                this._DataSet = value;
            }
        }

        public DBConnSql DBConn
        {
            get { return _DBConn; }
        }

        #endregion

        #region methods

        // Methods

        public void AddPk(string pcFields)
        {
            if ((this._myDataTable != null) && !this._myDataTable.Constraints.Contains("PrimaryKey"))
            {
                Array loArr1 = UtilStr.StrToArray(pcFields);
                Array loArr2 = Array.CreateInstance(typeof(DataColumn), loArr1.Length);
                int num1 = 0;
                foreach (string text1 in loArr1)
                {
                    loArr2.SetValue(this._myDataTable.Columns[text1], num1++);
                }
                this._myDataTable.Constraints.Add("PrimaryKey", (DataColumn[])loArr2, true);
            }
        }


        protected virtual void ClearEnvironment()
        {
            this._sql = "";
            this._CurrentIndex = -1;
            this._CustomDefaultColumns = "";
            this._CustomDefaultValues = "";
        }

        public virtual void CloneFrom(rsQuery poSource)
        {
            this._myDataTable = poSource.CurrentTable.Clone();
            poSource.CurrentTable.Constraints.Clear();
            this._myDataTable.TableName = AppEnv.GetNextDataTableName();//DBConn.GetNextDataTableName();
            this.QueryCriteria = poSource.QueryCriteria;
        }

        public void Close()
        {
            this.ClearEnvironment();
            if (this.CurrentTable != null)
            {
                //DBConn.CloseDataTable(this.CurrentTable.TableName);//songyf
                if (this.CurrentTable.DataSet != null)
                {
                    _myDataTable.DataSet.Tables.Remove(_myDataTable);
                    _myDataTable.Clear();
                    _myDataTable.Constraints.Clear();
                    _myDataTable.Columns.Clear();
                    _myDataTable.Dispose();
                    this._myDataTable = null;
                }
            }
        }

        protected void ColumnChanged(object sender, DataColumnChangeEventArgs e)
        {
            this.FireFieldValueChanged(e.Column.ColumnName);
        }

        public object Compute(string pcAggrFunction, string pcExpr, string pcCriteria)
        {
            object obj1 = null;
            try
            {
                this.Columns.Add("ABCDEFGHIJKLMNOPQRSTUVWXYZ", typeof(decimal), pcExpr);
                obj1 = this.CurrentTable.Compute(pcAggrFunction + "(ABCDEFGHIJKLMNOPQRSTUVWXYZ)", pcCriteria);
                this.Columns.Remove("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
            }
            catch (Exception exception1)
            {
                obj1 = exception1;
            }
            return obj1;
        }

        public virtual DataRow CopyRow()
        {
            DataRow row1 = this.CurrentRow;
            DataRow row2 = null;
            if (row1 != null)
            {
                row2 = this._myDataTable.NewRow();
                if (row2 == null)
                {
                    return row2;
                }
                row2.BeginEdit();
                foreach (DataColumn column1 in this._myDataTable.Columns)
                {
                    string text1 = column1.ColumnName;
                    row2[text1] = row1[text1];
                }
                row2.EndEdit();
                this._myDataTable.Rows.Add(row2);
                //this.MarkNewRowRecordId(row2);
            }
            return row2;
        }



        public void CreateFrom(List<DataColumn> poDataColumns)
        {
            this._myDataTable = new DataTable(this._tableName);

            foreach (DataColumn column1 in poDataColumns)
            {
                this._myDataTable.Columns.Add(column1);
            }
        }



        public void DeleteAllRecord()
        {
            bool flag1 = this.IsToFireRecordMovedEvent;
            this.IsToFireRecordMovedEvent = false;
            while (this.RecCount > 0)
            {
                this.MoveFirst();
                this.DeleteCurrentRow();
            }
            this.IsToFireRecordMovedEvent = flag1;
            this.FireRecordMovedEvent();
        }

        public virtual DataRow DeleteCurrentRow()
        {
            DataRow row1 = this.CurrentRow;
            if (row1.RowState == DataRowState.Added)
            {
                this._myDataTable.Rows.Remove(row1);
            }
            else
            {
                row1.Delete();
            }
            row1 = this.CurrentRow;
            bool flag1 = this.IsToFireRecordMovedEvent;
            this.IsToFireRecordMovedEvent = false;
            if (row1 != null)
            {
                if (row1.RowState == DataRowState.Deleted)
                {
                    row1 = this.MoveNext();
                }
            }
            else
            {
                row1 = this.MoveLast();
            }
            if (this._CurrentIndex >= this.RecCount)
            {
                this._CurrentIndex = -1;
            }
            this.IsToFireRecordMovedEvent = flag1;
            this.FireRecordMovedEvent();
            return row1;
        }

        public void FilterBy(string pcExpression)
        {
            this._myDataTable.DefaultView.RowFilter = pcExpression;
        }


        public bool FireAfterAddNewRecord()
        {
            bool flag1 = true;
            if (this.AfterAddingNewRecord != null)
            {
                flag1 = this.AfterAddingNewRecord(this);
            }
            return flag1;
        }



        public bool FireAfterSavingOfData()
        {
            bool flag1 = true;
            if (this.AfterSavingOfData != null)
            {
                flag1 = this.AfterSavingOfData(this);
            }
            return flag1;
        }



        public bool FireBeforeAddNewRecord()
        {
            bool flag1 = true;
            if (this.BeforeAddingNewRecord != null)
            {
                flag1 = this.BeforeAddingNewRecord(this);
            }
            return flag1;
        }



        public bool FireBeforeRecordMoved()
        {
            bool flag1 = true;
            if ((this.BeforeRecordMoved != null) && this._lFireRecordMoved)
            {
                flag1 = this.BeforeRecordMoved(this);
            }
            return flag1;
        }



        public bool FireBeforeSavingOfData()
        {
            bool flag1 = true;
            if (this.BeforeSavingOfData != null)
            {
                flag1 = this.BeforeSavingOfData(this);
            }
            return flag1;
        }



        public void FireFieldValueChanged(string pcColumnName)
        {
            if ((this.FieldValueChanged != null) && this.IsToFireColumnChanged)
            {
                this.FieldValueChanged(this, pcColumnName);
            }
        }



        protected void FireFieldValueChangedEx(rsQuery poQuery, string pcColumnName)
        {
            if ((this.FieldValueChanged != null) && this.IsToFireColumnChanged)
            {
                this.FieldValueChanged(poQuery, pcColumnName);
            }
        }



        public void FireQueryOpened()
        {
            if (this.QueryOpened != null)
            {
                this.QueryOpened(this);
            }
        }



        public void FireRecordMovedEvent()
        {
            if (this._lFireRecordMoved)
            {
                this.FireRefreshRequested();
                if (this.RecordMoved != null)
                {
                    this.RecordMoved();
                }
            }
        }



        public void FireRefreshRequested()
        {
            if (this.RefreshRequested != null)
            {
                this.RefreshRequested(this);
            }
        }



        public byte[] GetBytes(string pcFieldName)
        {
            byte[] buffer1 = null;
            if (this.Columns.Contains(pcFieldName))
            {
                object obj1 = this.CurrentRow[pcFieldName];
                if ((obj1 != null) && !(obj1 is DBNull))
                {
                    string text1 = this.GetString(pcFieldName);
                    if (text1 != "")
                    {
                        buffer1 = Convert.FromBase64String(text1);
                    }
                }
            }
            return buffer1;
        }



        public DateTime GetDateTime(string pcFieldName)
        {
            return UtilStr.StrToDt(this.GetString(pcFieldName, this.CurrentRow));
        }



        public decimal GetDecimal(string pcFieldName)
        {
            return Utils .ValD(this.GetString(pcFieldName));
        }

        public string GetFieldValues(string pcFieldNames)
        {
            return this.GetFieldValues(pcFieldNames, this.CurrentRow);
        }



        public string GetFieldValues(string pcFieldNames, DataRow poDataRow)
        {
            string text1 = "";
            Array array1 = UtilStr.StrToArray(pcFieldNames);
            foreach (string text2 in array1)
            {
                if (this.Columns.Contains(text2))
                {
                    text1 = UtilStr.AddStr(text1, this.GetString(text2, poDataRow));
                }
                else
                {
                    text1 = UtilStr.AddStr(text1, text2);
                }
            }
            return text1;
        }



        public object GetImage(string pcFieldName)
        {
            object obj1 = null;
            if (this.CurrentRow != null)
            {
                obj1 = Utils.BytesToImage(this.CurrentRow[pcFieldName]);
            }
            return obj1;
        }

        //public byte[] GetBytes(string pcFieldName)
        //{
        //    byte[] obj1 = null;
        //    if (this.CurrentRow != null)
        //    {
        //        obj1 = this.CurrentRow[pcFieldName];
        //    }
        //    return obj1;
        //}


        public int GetInt(string pcFieldName)
        {
            return Utils.ValI(this.GetString(pcFieldName));
        }


        public string GetString(string pcFieldName)
        {
            return this.GetString(pcFieldName, this.CurrentRow);
        }


        public bool GetBool(string pcFieldName)
        {
            return UtilStr.StrToBool(GetString(pcFieldName));
        }

        public string GetString(string pcFieldName, DataRow poDr)
        {
            string text1 = "";
            if (((this._myDataTable == null) || !this._myDataTable.Columns.Contains(pcFieldName)) || (poDr == null))
            {
                return text1;
            }
            if (poDr[pcFieldName] is DateTime)
            {
                try
                {
                    DateTime time1 = (DateTime)poDr[pcFieldName];
                    if (((time1.Year != 0x76c) || (time1.Month != 1)) || (time1.Day != 1))
                    {
                        return time1.ToString("G");
                    }
                    return "";
                }
                catch (Exception)
                {
                    return "";
                }
            }
            return poDr[pcFieldName].ToString().Trim();
        }



        public string GetString(string pcFieldName, int piDecimalDigit)
        {
            string text1 = this.GetString(pcFieldName);
            decimal num1 = Utils.ValD(text1);
            if (UtilStr.UAndT(num1) != text1)
            {
                return text1;
            }
            string text2 = "0.";
            for (int num2 = 0; num2 < piDecimalDigit; num2++)
            {
                text2 = text2 + "0";
            }
            return num1.ToString(text2);
        }

        public DataRow Go(int recordNumber)
        {
            if ((recordNumber != this._CurrentIndex) && this.FireBeforeRecordMoved())
            {
                this._CurrentIndex = recordNumber;
                this.FireRecordMovedEvent();
            }
            return this.CurrentRow;
        }

        public void GoTo(DataRow dr)
        {
            if ((dr != null) && ((this.RecNo <= -1) || (this._myDataTable.DefaultView[this.RecNo].Row != dr)))
            {
                for (int num1 = 0; num1 < this.RecCount; num1++)
                {
                    if (this._myDataTable.DefaultView[num1].Row == dr)
                    {
                        this.Go(num1);
                        return;
                    }
                }
            }
        }

        public void GoTo(DataRow podr, bool plFireEvent)
        {
            bool flag1 = this.IsToFireRecordMovedEvent;
            this.IsToFireRecordMovedEvent = plFireEvent;
            this.GoTo(podr);
            this.IsToFireRecordMovedEvent = flag1;
        }

        public bool GoToRecordByFieldsAndValues(string pcFields, string pcValues)
        {
            int num1 = this._CurrentIndex;
            //UtilStr.StrToArray(pcFields);
            //UtilStr.StrToArray(pcValues);
            bool flag1 = false;
            this._CurrentIndex = 0;
            while (this._CurrentIndex < this.RecCount)
            {
                if (DALibs.IsValuesMatch(this.CurrentRow, pcFields, pcValues))
                {
                    flag1 = true;
                    break;
                }
                this._CurrentIndex++;
            }
            if (flag1 && (this._CurrentIndex != num1))
            {
                this.FireRecordMovedEvent();
                return flag1;
            }
            this._CurrentIndex = num1;
            return flag1;
        }

        public DataRow GoToRecordByString(string pcStr, string pcColName)
        {
            int num1 = this._CurrentIndex;
            pcStr = UtilStr.UAndT(pcStr);
            int num2 = pcStr.Length;
            bool flag1 = false;
            if (this.Columns.Contains(pcColName))
            {
                this._CurrentIndex = 0;
                while (this._CurrentIndex < this.RecCount)
                {
                    string text1 = UtilStr.UAndT(this.CurrentRow[pcColName]);
                    if (text1.Length >= num2)
                    {
                        text1 = text1.Substring(0, num2);
                        if (text1 == pcStr)
                        {
                            flag1 = true;
                            break;
                        }
                    }
                    this._CurrentIndex++;
                }
            }
            if (flag1)
            {
                this.FireRecordMovedEvent();
            }
            else
            {
                this._CurrentIndex = num1;
            }
            return this.CurrentRow;
        }

        public void GoToRecordInPage(int piRecordIndex)
        {
            if ((piRecordIndex >= 0) && (piRecordIndex < this.RecordsPerPage))
            {
                int num1 = ((this.PageNo - 1) * this.RecordsPerPage) + piRecordIndex;
                if (num1 < 0)
                {
                    num1 = 0;
                }
                if (num1 >= this.RecCount)
                {
                    num1 = this.RecCount - 1;
                }
                this.Go(num1);
            }
        }

      

        public DataRow Locate(object[] paValues)
        {
            DataRow row1 = this._myDataTable.Rows.Find(paValues);
            if (row1 != null)
            {
                this.GoTo(row1);
            }
            return row1;
        }

        public DataRow MoveFirst()
        {
            if ((this._CurrentIndex != 0) && this.FireBeforeRecordMoved())
            {
                this._CurrentIndex = 0;
                this.FireRecordMovedEvent();
            }
            return this.CurrentRow;
        }

        public DataRow MoveLast()
        {
            if ((this._CurrentIndex != (this._myDataTable.DefaultView.Count - 1)) && this.FireBeforeRecordMoved())
            {
                this._CurrentIndex = this._myDataTable.DefaultView.Count - 1;
                this.FireRecordMovedEvent();
            }
            return this.CurrentRow;
        }

        public DataRow MoveNext()
        {
            if ((this._CurrentIndex < (this._myDataTable.DefaultView.Count - 1)) && this.FireBeforeRecordMoved())
            {
                this._CurrentIndex++;
                this.FireRecordMovedEvent();
            }
            return this.CurrentRow;
        }

        public DataRow MovePrev()
        {
            if ((this._CurrentIndex > 0) && this.FireBeforeRecordMoved())
            {
                this._CurrentIndex--;
                this.FireRecordMovedEvent();
            }
            return this.CurrentRow;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public bool Next()
        {
            if (this._CurrentIndex < this.RecCount - 1 && this._CurrentIndex > -1)
            {
                this._CurrentIndex++;
                this.FireRecordMovedEvent();
                return true;
            }
            return false;
        }

        public DataRow NewRowFrom(DataRow poDr)
        {
            DataRow row1 = this._myDataTable.NewRow();
            if (row1 != null)
            {
                row1.BeginEdit();
                foreach (DataColumn column1 in this.Columns)
                {
                    string text1 = column1.ColumnName.Trim().ToUpper();
                    if (poDr.Table.Columns.Contains(text1))
                    {
                        row1[text1] = poDr[text1];
                    }
                }
                row1.EndEdit();
            }
            this._myDataTable.Rows.Add(row1);
            this.GoTo(row1);
            return row1;
        }

        public virtual bool Open(string pcSQLCommand, DBConnSql poDBConn)
        {
            this._backendTableName = AppEnv.GetRandom(); ;
            this._CurrentIndex = -1;
            this._sql = pcSQLCommand;
            this._DBConn = poDBConn;
            this._myDataTable = poDBConn.OpenDataTable(pcSQLCommand);
            if (this._myDataTable != null)
            {
                if (this._myDataTable.Rows.Count > 0)
                {
                    this._CurrentIndex = 0;
                }
                this.FireQueryOpened();
                this.FireRecordMovedEvent();
            }
            return (this._myDataTable != null);
        }

        public virtual bool Open(DataSet poDataSet, string pcTableName, string pcSQLCommand, DBConnSql  poDBConn)
        {
            this._backendTableName = pcTableName;
            this._CurrentIndex = -1;
            this._sql = pcSQLCommand;
            this._DBConn = poDBConn;
            this._myDataTable = poDBConn.OpenDataTable(poDataSet, pcTableName, pcSQLCommand);
            if (this._myDataTable != null)
            {
                if (this._myDataTable.Rows.Count > 0)
                {
                    this._CurrentIndex = 0;
                }
                this.FireQueryOpened();
                this.FireRecordMovedEvent();
            }
            return (this._myDataTable != null);
        }


        public void OpenFromDataTable(DataTable poDataTable)
        {
            if (this._myDataTable != null)
            {
                this.Close();
            }
            this._myDataTable = poDataTable;
            if (this._myDataTable != null)
            {
                if (this._myDataTable.Rows.Count > 0)
                {
                    this._CurrentIndex = 0;
                }
                this.FireQueryOpened();
            }
        }

        public void PageFirst()
        {
            this.PageNo = 1;
        }

        public void PageLast()
        {
            this.PageNo = this.PageCount;
        }

        public void PageNext()
        {
            this.PageNo++;
        }

        public void PagePrev()
        {
            this.PageNo--;
        }


        public bool ReQuery()
        {
            bool lbRetVal = false;
            if (this._sql != "")
            {
                lbRetVal = this.Open(this.MyDataSet, this.BackendTableName, this._sql, this._DBConn);
            }
            return lbRetVal;
        }

        public void RestoreAllRows()
        {
            this._myDataTable.RejectChanges();
            this.MoveFirst();
        }

        public bool RestoreCurrentRow()
        {
            DataRow row1 = this.CurrentRow;
            if (row1 != null)
            {
                if (row1.RowState == DataRowState.Added)
                {
                    this.DeleteCurrentRow();
                }
                else
                {
                    row1.RejectChanges();
                }
                this.FireRecordMovedEvent();
            }
            return true;
        }

        public int RowIndexInPage()
        {
            return RowIndexInPage(this.RecNo);
        }

        public int RowIndexInPage(int piRecNo)
        {
            int num1 = -1;
            int num2 = (this.PageNo - 1) * this.RecordsPerPage;
            int num3 = (this.PageNo * this.RecordsPerPage) - 1;
            if (num3 >= this.RecCount)
            {
                num3 = this.RecCount - 1;
            }
            if ((piRecNo >= num2) && (piRecNo <= num3))
            {
                num1 = piRecNo - num2;
            }
            return num1;
        }

        public virtual void SetBytes(string pcColName, byte[] poBytes)
        {
            if (this.Columns.Contains(pcColName) && (this.CurrentRow != null))
            {
                this.CurrentRow.BeginEdit();
                if ((poBytes == null) || (0 != 0))
                {
                    this.CurrentRow[pcColName] = DBNull.Value;
                }
                else
                {
                    string text1 = Convert.ToBase64String(poBytes, 0, poBytes.Length);
                    this.CurrentRow[pcColName] = text1;
                }
                this.CurrentRow.EndEdit();
            }
        }


        public virtual void SetField(string pcColName, string pcValue)
        {
            this.SetField(pcColName, pcValue, true);
        }

        public virtual void SetField(string pcColName, string pcValue, bool plFireFieldChangedEvent)
        {
            pcColName = UtilStr.UAndT(pcColName);
            DataRow row1 = this.CurrentRow;
            if (row1 != null)
            {
                string text1 = row1[pcColName].ToString().Trim();
                bool flag1 = false;
                if (!flag1 || (row1[pcColName] == DBNull.Value))
                {
                    bool flag2 = this.IsToFireColumnChanged;
                    this.IsToFireColumnChanged = plFireFieldChangedEvent;
                    this.SetField(pcColName, pcValue, row1);
                    if (this.CurrentRow != row1)
                    {
                        bool flag3 = this.IsToFireRecordMovedEvent;
                        this.IsToFireRecordMovedEvent = false;
                        this.GoTo(row1);
                        this.IsToFireRecordMovedEvent = flag3;
                    }
                    this.FireFieldValueChanged(pcColName);
                    this.IsToFireColumnChanged = flag2;
                }
            }
        }


        public virtual void SetField(string pcColName, string pcValue, DataRow poDataRow)
        {
            if (poDataRow.Table.Columns.Contains(pcColName))
            {
                DataColumn column1 = poDataRow.Table.Columns[pcColName];
                if ((column1.MaxLength >= 0) && (column1.MaxLength < pcValue.Length))
                {
                    pcValue = pcValue.Substring(0, column1.MaxLength);
                }
                string text1 = this.GetString(pcColName, poDataRow);
                poDataRow.BeginEdit();
                poDataRow[pcColName] = pcValue;
                poDataRow.EndEdit();
            }
        }

        public void SetCustomDefault(string pcColumns, string pcValues)
        {
            this._CustomDefaultColumns = pcColumns;
            this._CustomDefaultValues = pcValues;
        }

        public void SortBy(string pcSort)
        {
            try
            {
                if (this._myDataTable != null)
                {
                    int num1 = -1;
                    this._SortString = pcSort;
                    DataRow row1 = this.CurrentRow;
                    this._myDataTable.DefaultView.Sort = pcSort;
                    if (row1 != null)
                    {
                        this.GoTo(row1, false);
                        num1 = this.RecNo;
                    }
                    DataTable table1 = this._myDataTable.Copy();
                    this._myDataTable.Rows.Clear();
                    this._myDataTable.DefaultView.Sort = "";
                    DataView view1 = new DataView(table1, "", pcSort, DataViewRowState.CurrentRows);
                    foreach (DataRowView view2 in view1)
                    {
                        this._myDataTable.ImportRow(view2.Row);
                    }
                    view1 = new DataView(table1, "", pcSort, DataViewRowState.Deleted);
                    foreach (DataRowView view3 in view1)
                    {
                        this._myDataTable.ImportRow(view3.Row);
                    }
                    this._CurrentIndex = num1;
                    this.FireRefreshRequested();
                }
            }
            catch (Exception)
            {
            }
        }

        public void SortBy(string pcColumnId, bool plAscending)
        {
            string text1 = pcColumnId + (plAscending ? " asc" : " desc");
            this.SortBy(text1);
        }


        public void ToXML()
        {
            ToXML(this.AllFields);
        }

        public void ToXML(string pcCols)
        {
            if (this.IsOpened)
            {
                Array array1 = UtilStr.StrToArray(pcCols);
                XmlTextWriter writer1 = new XmlTextWriter(@"c:\result.xml", Encoding.UTF8);
                writer1.WriteStartDocument(true);
                writer1.WriteStartElement("Data");
                this._CurrentIndex = 0;
                while (this._CurrentIndex < this.RecCount)
                {
                    string text1 = "Record";
                    writer1.WriteStartElement(text1);
                    for (int num1 = 0; num1 < array1.Length; num1++)
                    {
                        string text2 = array1.GetValue(num1).ToString();
                        writer1.WriteElementString(text2, this.GetString(text2));
                    }
                    writer1.WriteEndElement();
                    this._CurrentIndex++;
                }
                writer1.WriteEndElement();
                writer1.WriteEndDocument();
                writer1.Flush();
                writer1.Close();
            }
        }
        #endregion
    }
}