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Adding template to FilterTemplate Programmatically

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Ricky
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Ricky asked on 14 Jan 2015, 07:07 PM
Hello Anyone,
I guess i am missing something here. I have created an ITemplate as below and adding it to the FilterTemplate of one of the column of RadGrid. 

public class cblItemTemplate : ITemplate
{
    /// <summary>
    /// Create the template
    /// </summary>
    /// <param name="container"></param>
    public void InstantiateIn(Control container)
    {
        Panel pnl = new Panel();
 
        //checkbox
        CheckBoxList cbl = new CheckBoxList();
        cbl.ID = "cblCounty";
        cbl.AutoPostBack = false;
        cbl.DataBinding += cbl_DataBinding;
 
        //button
        Button btn = new Button();
        btn.ID = "btnApply";
        btn.Text = "Apply";
         
        //button
        Button btnClear = new Button();
        btnClear.ID = "btnClear";
        btnClear.Text = "Clear";
 
        pnl.Controls.Add(cbl);
        pnl.Controls.Add(btn);
        pnl.Controls.Add(btnClear);
 
        container.Controls.Add(pnl);
    }
 
    void cbl_DataBinding(object sender, EventArgs e)
    {
        CheckBoxList cbl = (CheckBoxList)sender;
        cbl.Items.Add(new ListItem("County1"));
        cbl.Items.Add(new ListItem("County2"));
    }
}

On first load, i see the template added to the column. But when i click on the Apply button, the template vanishes; i do not see it. I am adding the template on the ColumnCreated event of the radgrid as below:

protected void RadGrid1_ColumnCreated(object sender, GridColumnCreatedEventArgs e)
{
     if (col.UniqueName == "county")
     {
           var cbl = new cblItemTemplate();
           col.FilterTemplate = cbl;
     }
}

Can someone please let me know where i am going wrong? Do i need to add the filtertemplate in a different event?

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Ricky
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answered on 14 Jan 2015, 09:40 PM
I guess i also need to know how do i bind an event to button where i can rebind the grid with the FilterExpression. Any help is much appreciated!
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Ricky
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answered on 16 Jan 2015, 12:28 PM
Telerik team? No response?
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Eyup
Telerik team
answered on 19 Jan 2015, 12:43 PM
Hello Ricky,

I've created a sample RadGrid web site to demonstrate how you can modify the filter cell of a given column programmatically. This is the recommended way instead of creating dynamic FilterTemplate. Please run the attached application and let me know if it helps you.

Regards,
Eyup
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Kiran
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answered on 12 Nov 2019, 04:49 PM

Hi Eyup,

Can you please provide a VB version of the attachment? I tried converting but somethings not right. 

Thank you.

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Rumen
Telerik team
answered on 13 Nov 2019, 12:27 PM

Hi Kiran,

Please find attached the requested VB version of the example! Please give it a spin and let me know how it works on your side.

Best Regards,
Rumen
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Eyup
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