In the header, add AllowFilteringByColumns, add the GroupSettings node so the filtering will not be case sensitive. Add AutoPostPackOnFilter for each column
<
telerik:RadGrid
ID
=
"RadGrid1"
runat
=
"server"
AutoGenerateColumns
=
"False"
AllowFilteringByColumn
=
"true"
CssClass
=
"grid"
PageSize
=
"50"
AllowPaging
=
"true"
Width
=
"100%"
ShowFooter
=
"false"
CellSpacing
=
"0"
CellPadding
=
"0"
GridLines
=
"None"
>
<
GroupingSettings
CaseSensitive
=
"false"
/>
<
MasterTableView
DataKeyNames
=
"custnmbr"
ShowGroupFooter
=
"false"
>
<
Columns
>
<
telerik:GridButtonColumn
ButtonType
=
"LinkButton"
Text
=
"select"
ItemStyle-Width
=
"80px"
></
telerik:GridButtonColumn
>
<
telerik:GridBoundColumn
DataField
=
"custnmbr"
HeaderText
=
"Customer Number"
ItemStyle-Width
=
"80px"
AutoPostBackOnFilter
=
"true"
ReadOnly
=
"True"
></
telerik:GridBoundColumn
>
<
telerik:GridBoundColumn
DataField
=
"custname"
HeaderText
=
"Customer Name"
AutoPostBackOnFilter
=
"true"
ReadOnly
=
"True"
></
telerik:GridBoundColumn
>
</
Columns
>
</
MasterTableView
>
</
telerik:RadGrid
>
This code will provide an 'empty message'
If TypeOf e.Item Is GridFilteringItem Then
Dim filter As GridFilteringItem = DirectCast(e.Item, GridFilteringItem)
For Each col As GridColumn In RadGrid1.MasterTableView.RenderColumns
If col.OrderIndex > 1 AndAlso col.ColumnType = "GridBoundColumn" Then
Dim txtbx As TextBox = TryCast(filter(col.UniqueName).Controls(0), TextBox)
If txtbx.Text = "" Then
txtbx.Text = "Filter text"
End If
End If
Next
End If