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Custom Filter in HeaderContextMenu of RadGrid

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This is a migrated thread and some comments may be shown as answers.
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Karsten asked on 19 Oct 2010, 01:55 PM

i want to create a very simple filter in the headercontextmenu of a radgrid.
The filter should consist of one textbox.
If the "enter"-key is pressed, the grid-content should be filtered.
The filter should be work per column.

Is this possible?
Can you explain me, how i can realize this?

I've attached two files (screenshots).
FilterIst.jpg = this is the filter in my current grid.
FilterSoll.jpg = this is the filter, i want to have.

kind regards

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answered on 25 Oct 2010, 07:48 AM
Hello Karsten Doering,

This scenario is not supported out of the box. You have to manually configure the RadContextMenu to show menu item containing a textbox and filtering the grid. You can do that by wiring the OnPreRenderComplete event handler for the page and adding a new menu item with the desired control in it, and also configure the menu item per column by setting the special attributes: ColumnName and TableID as well as adding additional settings depending on column type if needed. Here is a code sample on how to achieve this:
protected override void OnPreRenderComplete(EventArgs e)
            RadContextMenu menu = RadGrid1.HeaderContextMenu;
            RadMenuItem item = new RadMenuItem();
            TextBox txtBox = new TextBox();
            txtBox.ID = "txtBox1";
            txtBox.AutoPostBack = true;
            txtBox.TextChanged += new EventHandler(txtBox_TextChanged);
            item.Attributes["ColumnName"] = string.Empty;
            item.Attributes["TableID"] = string.Empty;
You may find futher information on customizing the FilterContextMenu in this help article.

All the best,
the Telerik team
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