How I do I add an HTML attribute to the filter textbox?

[Pavel]

I need to add an attribute to the filter textbox in a few columns. It needs to happen server-side.
How can I access those controls?

[Jayesh Goyani]

Hello,

<telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateColumns="false" OnNeedDataSource="RadGrid1_NeedDataSource"
               AllowFilteringByColumn="true" OnItemDataBound="RadGrid1_ItemDataBound">
               <MasterTableView DataKeyNames="ID">
                   <Columns>
                       <telerik:GridBoundColumn DataField="ID" UniqueName="ID" HeaderText="ID">
                       </telerik:GridBoundColumn>
                       <telerik:GridBoundColumn DataField="Name" UniqueName="Name" HeaderText="Name">
                       </telerik:GridBoundColumn>
                   </Columns>
               </MasterTableView>
           </telerik:RadGrid>

protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
    {
        List<Employee> list = new List<Employee>(); ;

        Employee obj = new Employee();
        obj.ID = "1";
        obj.Name = "Name1";
        list.Add(obj);

        obj = new Employee();
        obj.ID = "2";
        obj.Name = "Name2";
        list.Add(obj);

        RadGrid1.DataSource =  list;
    }


    protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridFilteringItem)
        {
            GridFilteringItem item = e.Item as GridFilteringItem;
            (item["ID"].Controls[0] as TextBox).Attributes.Add("AttributeName","AttributeValue");
        }
    }

Thanks,
Jayesh Goyani

[Princy]

Hi Pavel,

I guess you want to access the GridFiltering TextBox and set some attributes to it. Please try the following code snippet:

C#:

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
 if (e.Item is GridFilteringItem)
  {
   GridFilteringItem item = (GridFilteringItem)e.Item;
   TextBox txtBox1 = (TextBox)item["ColumnUniqueName"].Controls[0];
   txtBox1.Attributes.Add("onclick", "return OnClick();");     // Adding OnClick event
  }
}

JS:

<script type="text/javascript">
function OnClick()
 {
  alert("TextBox Click");
 }
</script>

Thanks,
Princy

[Pavel]

Thank you, both!