function iDataTable(tbName)
{   //Begin New
        if(tbName==undefined){tbName="table1"}
this._Columns=new Array();
this._Rows=new Array();
//End New
        this.TableName=tbName;
this.DataSchema="";
this.Columns=iColumnsCollection;
this.Rows=iRowCollection;
}
function iColumnsCollection(_iColumnIndex)
{
this.Add=function(iCol)
{
if(!this.Exists(iCol.ColumnName))
{   iCol.ColumnIndex=this._Columns.length;
this._Columns.push(iCol)
}
}
this.Remove=function(iCol)
{   if(this.Exists(iCol.ColumnName))
this._Columns.splice(iCol.ColumnIndex)
}
this.Exists=function(iColumnName)
{
return (this.IndexOf(iColumnName)>-1);
}
this.IndexOf=function(iColumnName)
{
for(var _Index=0;_Index<this._Columns.length;_Index++)
{
if(this._Columns[_Index].ColumnName==iColumnName)
{
return _Index;
break;
}
}
return -1;
}
if(_iColumnIndex!=undefined)
{
if(_iColumnIndex<0 || _iColumnIndex>this._Columns.length-1)
{
alert("Column Index Error")
}
else
{
return this._Columns[_iColumnIndex];
}
}
return this;
}
function iColumn(_ColumnName,_DataType)
{
this.ColumnName=_ColumnName;
this.DataType=_DataType;//System.String System.Decimal  System.Int32 System.DateTime
        this.ColumnIndex=-1;
}
function iRowCollection(_iRowIndex)
{
this.Add=function(_iRow)
{
_iRow.RowIndex=this._Rows.length;
this._Rows.push(_iRow);
}
this.Remove=function(_iRow)
{
if(_iRow.RowIndex>-1 && _iRow.RowIndex<this._Rows.length)
{
this._Rows.splice(_iRow.RowIndex);
}
}
if(_iRowIndex!=undefined)
{
if(_iRowIndex<0 || _iRowIndex>this._Rows.length-1)
{
alert("Row Index Error")
}
else
{
return this._Rows[_iRowIndex];
}
}
this.insertRow=function()
{
var _iRow=new iRow(this._Columns);
this.Add(_iRow);
return _iRow;
}
return this;
}
function iRow(_ColumnsX)
{
this._Cells=new Array();
var t=_ColumnsX.length;
for(var i=0;i<t;i++)
{
var _Cell=new iCell();
_Cell.ColumnName=_ColumnsX[i].ColumnName;
_Cell.CellIndex=i;
this._Cells.push(_Cell);
}
this.Cells=function(_CellIndex)
{
if(_CellIndex!=undefined)
{return this._Cells[_CellIndex];}
else
{
return this._Cells;
}
}
this.RowIndex=-1;
return this;
}
function iCell(_ColumnName)
{
this.value="";
this.ColumnName=_ColumnName;
this.CellIndex=-1;
}