How to raise a Postback on filter manually?

[Käse]

Hello,

 I have a <telerik:RadGrid> which contains some <telerik:GridBoundColumn> elements. Until now the AutoPostBackOnFilter value was set to true. This means the grid had its contents updated every time I left the focus of one of the GridBoundColumns. This is not a desired behavior anymore. Now I just want to trigger the filtering manually by let's say clicking on a button. So I set all the AutoPostBackOnFilter values to false and created a button with the according serverside event handler, which is empty so far :)

 How could I implement this requirement?

 Thanks in advance!

[Eyup]

Hi Käse,

This requirement is the default behavior of the built-in functionality provided by RadGrid:
http://demos.telerik.com/aspnet-ajax/grid/examples/functionality/filtering/basic-filtering/defaultcs.aspx

Hope this helps.

Regards,
Eyup
Telerik

[Käse]

Correct me if I am wrong but what you are suggesting is to use ShowFilterIcon="true", am I right? Those FilterIcons make the user chose a FilterFunction. I have all my FilterFunctions defined within <telerik:GridBoundColumn>.

 

What I want is simply to trigger filtering by pressing a simple <button> or a <asp:Button>. Is this possible?

[Viktor Tachev]

Hello Käse,

In order to implement the functionality you can handle the client-side click event of the button control and call the filter() function for a given column.


Alternatively you can use server-side logic and modify the FilterExpression of RadGrid manually. Check out the following article that describes the approach in more detail.

• http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/functionality/filtering/how-to/operate-with-the-filterexpression-manually

Regards,
Viktor Tachev
Telerik

[John Eptaminitakis]

I would have thought this would be a fairly common requirement i.e. don't post back on every filter selection, delay filtering until they click an apply button. The guidance above doesn't seem clear at all to me. Is there no better guidance on the easiest way to accomplish this?  

[Eyup]

Hi John,

The grid provides the AutoPostBackOnFilter property and also the FilterDelay property, which are different functionalities:
https://demos.telerik.com/aspnet-ajax/grid/examples/functionality/filtering/basic-filtering/defaultcs.aspx

Executing the filter option specifically on enter key is also an option and can be achieved using the following approach:
https://www.telerik.com/forums/force-a-filter-to-be-applied-on-enter-key#iAhKwV2sJk6XfuLfw7Dg-w

Regards,
Eyup
Progress Telerik