Rad Grid Header Context Menu - Maintain State

[Mike]

For those of you that are looking on how to maintain state of the columns that are marked not visible. The problem is that when you have a column that is marked as not visible and then you select to show that with the column picker, it does not maintain the state. The way that we got it to do it is by this:

// Finds all the checkboxes in the context menu.

$(

function() {

 

$(

":checkbox").filter(function() {

 

 

return this.id.match('rghcMenu')

 

}).click(

function() { OnContextMenuClick(this) });

 

}

);

var

 

columnHash;

 

// Triggered when the columns slide open.

function

 

OnHeaderContextMenuClientItemOpened() {

 

 

for (var key in columnHash) {

 

 

var control = document.getElementById(key);

 

control.checked = columnHash[key];

}

}

// Maintains the state of the checkbox.

function

 

OnContextMenuClick(checkBox) {

 

 

if (columnHash == null) {

 

columnHash =

new Object();

 

}

columnHash[checkBox.id] = checkBox.checked;

}

and then have this in the HeaderContextMenu on the grid:

 

<

 

HeaderContextMenu OnClientItemOpened="OnHeaderContextMenuClientItemOpened" />

 

 

 

I hope that this helps people. I found it frustrating to figure out how to do it. We put ours in our skins for all themes and put the javascript and JQuery above in an embedded resource file which we load up on any page with a Rad Grid.

Mike Moser

[Rosen]

Hello Mike,

Indeed I'm able to observed the described behavior. However I'm happy to inform you that our developers has managed to addressed the issue in question. Thus the fix will be available in this year's Q1 version of RadControls for ASP.NET AJAX. You may also check the latest internal build section in your user account, the fix should be included in next week's builds. Meanwhile I have update your telerik points.

Please excuse us for the inconvenience.

Regards,
Rosen
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.