[Solved] How to know on client side if filters applied to RadGrid

[Tushar]

Hi,
I want to disable my custom "Clear Filter" header menu if there are no filters applied to the RadGrid.
But I am not able to know if filters are applied.

I have tried solutions mentioned in below link
http://stackoverflow.com/questions/8188990/how-to-know-when-filters-are-used-when-using-telerik-rad-grid
including 
sender.get_masterTableView().get_filterExpressions()
sender.get_masterTableView().get_filterExpressions().toOql()

But I am not able to get the filterExpressions successfully.

Can anyone please provide correct code?

[Konstantin Dikov]

Hello Tushar,

You could use the following approach for determining whether or not the grid have applied filters by traversing through each column and retrieving the current filter function. If any of the filter functions differs from "NoFilter", then there is filter applied:

<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
    <script type="text/javascript">
        function clickHandler(sender, args) {
            var grid = $find("<%=RadGrid1.ClientID%>");
            var isFilterApplied = isFilterAppliedToGrid(grid);
            console.log(isFilterApplied);
        }

        function isFilterAppliedToGrid(grid) {
            var columns = grid.get_masterTableView().get_columns();

            for (var i = 0; i < columns.length; i++) {
                if (columns[i].get_filterFunction() != "NoFilter") {
                    return true;
                }
            }

            return false;
        }
    </script>
</telerik:RadCodeBlock>

<telerik:RadButton runat="server" ID="RadButton1" AutoPostBack="false" OnClientClicked="clickHandler"></telerik:RadButton>

<telerik:RadGrid ID="RadGrid1" runat="server" AllowFilteringByColumn="true" OnNeedDataSource="RadGrid1_NeedDataSource">
</telerik:RadGrid>

Hope this helps.


Regards,
Konstantin Dikov
Telerik

 

 

[Tushar]

Thanks Konstantin!!