modifying HeaderContextMenu items for each column in Radgrid

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I have a radgrid with multiple column. 3 columns i have set sortable and all the other columns as non sortable. When i right click on any column, Headercontextmenu items are displayed.
for each column it is showing Sort Ascending and Sort descending as options. I want it to appear only for Sortable columns.
If i set EnableHeaderContextMenu = false then contextMenu is hidden for each column.
Please let me know if there is any way i can disable Context menu for non sortable column or remove Ascending and descending option from Context menu for non sortable columns

Thanks

Posted 3-Jun-13 6:52am

devcode007

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Maciej Los 3-Jun-13 16:06pm

You need to detect on which column click event has occurred ;)

devcode007 3-Jun-13 16:40pm

thanks for reply. Even before clicking we should be able to delete ascending/descending option from context menu for each column which are non sortable.

Maciej Los 4-Jun-13 1:57am

Is it a question or is it a statement?

Sunasara Imdadhusen 4-Jun-13 6:06am

You have to search on telerik web site

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Sunasara Imdadhusen · Answer 1 · 2013-06-04T00:06:00

Solution 1

This might be resolve your issue, specifing SortExpression property to empty string should fix the issue. Like this..

XML

<tr:GridTemplateColumn HeaderText="ColumnHeader" DataField="yourDataField" SortExpression="" >

Thanks

Posted 4-Jun-13 0:06am

Sunasara Imdadhusen

devcode007 · Answer 2 · 2015-04-07T11:33:00

have a hidden variable NonSortableColumns.
Populate this hidden variable on codebehind with pipe '|' seperated with all the columns that you dont want to Sort.

bind this for Radgrid's client side event RadGrid1.ClientSettings.ClientEvents.OnHeaderMenuShowing = "HeaderMenuShowing";

On aspx file, implement

JavaScript

<pre lang="Javascript">

function HeaderMenuShowing(sender, eventArgs) {

C#

var NonSortableColumns = document.getElementById('NonSortableColumns').value.split('|');
               for (var i = 0; i < NonSortableColumns.length; i++) {
                   if (NonSortableColumns[i] != '' && eventArgs.get_gridColumn().get_uniqueName() == NonSortableColumns[i]) {
                       //hides the  sorting options from the header context menu of the column which are set are non-sortable
                     for (var j = 0; j < eventArgs.get_menu().get_items().get_count(); j++)
                     {
                       var sortOption = eventArgs.get_menu().get_items().getItem(j).get_element().innerHTML.toLowerCase();
                       if((sortOption.search('ascending') >0) || (sortOption.search('descending') > 0) || (sortOption.search('clear sorting') > 0))
                           eventArgs.get_menu().get_items().getItem(j).get_element().style.display = "none";
                     }
                       break;

                   }
                   else
                   {
                       eventArgs.get_menu().get_items().getItem(0).get_element().style.display = "block";
                       eventArgs.get_menu().get_items().getItem(1).get_element().style.display = "block";
                       eventArgs.get_menu().get_items().getItem(2).get_element().style.display = "block";
                   }
               }

}

Basically have hidden the sort options for Non Sortable columns