How to make filter bar use textboxes and have display respond to each keystroke?
To get Textbox filtering, you can derive the GridFilterBar class and handle the CurrentCellChanged event handler. Below is the code snippet:
C#
public class GridTextBoxFilterBar : GridFilterBar
{
private GridDataBoundGrid _grid;
private DataTable _dataTable;
private DataSet ds;
public override void WireGrid(Syncfusion.Windows.Forms.Grid.GridDataBoundGrid grid,
Syncfusion.Windows.Forms.Grid.GridStyleInfo style)
{
if(_grid != null)
UnwireGrid();
if(grid != null)
{
_dataTable = grid.DataSource as DataTable;
if(_dataTable == null)
{
ds = grid.DataSource as DataSet;
if(ds != null)
{
_dataTable = ds.Tables[grid.DataMember];
}
}
if(_dataTable != null)
{
//add a fixed row at the top
grid.Model.Data.RowCount++;
grid.Model.Rows.HeaderCount++;
int _row = grid.Model.Rows.HeaderCount;
grid.Model.Rows.FrozenCount = grid.Model.Rows.FrozenCount + 1;
grid.Model.ChangeCells(GridRangeInfo.Cells(_row, 1, _row, grid.Model.ColCount), style, StyleModifyType.Override);
GridBorder border = grid.BaseStylesMap["Standard"].StyleInfo.Borders.Right;
for(int col = 1; col <= grid.Model.ColCount; ++col)
{
grid[_row, col].Borders.Right = border;
}
grid.CurrentCellChanged += new EventHandler(grid_FilterCellChanged);
}
}
_grid = grid;
}
}
VB
Public Class GridTextBoxFilterBar : Inherits GridFilterBar
Private _grid As GridDataBoundGrid
Private _dataTable As DataTable
Private ds As DataSet
Public overloads Overrides Sub WireGrid(ByVal grid As Syncfusion.Windows.Forms.Grid.GridDataBoundGrid, ByVal style As
Syncfusion.Windows.Forms.Grid.GridStyleInfo)
If Not _grid Is Nothing Then
UnwireGrid()
End If
If Not grid Is Nothing Then
_dataTable = CType(IIf(TypeOf grid.DataSource Is DataTable, grid.DataSource, Nothing), DataTable)
If _dataTable Is Nothing Then
ds = CType(IIf(TypeOf grid.DataSource Is DataSet, grid.DataSource, Nothing), DataSet)
If Not ds Is Nothing Then
_dataTable = ds.Tables(grid.DataMember)
End If
End If
If Not _dataTable Is Nothing Then
'add a fixed row at the top
grid.Model.Data.RowCount += 1
grid.Model.Rows.HeaderCount += 1
Dim _row As Integer = grid.Model.Rows.HeaderCount
grid.Model.Rows.FrozenCount = grid.Model.Rows.FrozenCount + 1
grid.Model.ChangeCells(GridRangeInfo.Cells(_row, 1, _row, grid.Model.ColCount), style, StyleModifyType.Override)
Dim border As GridBorder = grid.BaseStylesMap("Standard").StyleInfo.Borders.Right
Dim col As Integer = 1
Do While col <= grid.Model.ColCount
grid(_row, col).Borders.Right = border
col += 1
Loop
AddHandler grid.CurrentCellChanged, AddressOf grid_FilterCellChanged
End If
End If
_grid = grid
End Sub
End Class
Sample:
http://websamples.syncfusion.com/samples/kb/grid.windows/GDBGTextBoxFilter/main.htm
