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Bind Empty DataSource To RadGrid

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This is a migrated thread and some comments may be shown as answers.
Swapnil
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Swapnil asked on 05 Nov 2014, 12:57 PM

Hi, 
i am having radgrid which i want to bind to empty datasource but not working i tried the code:  
function ClearItems1()
{
var RadGridTaskActivity = $find("<%= RadGridTaskActivity.ClientID %>").get_masterTableView();
masterTable.set_dataSource(string.Empty);
masterTable.dataBind();
}


i tried with string.empty OR [ ] OR null but nothing working.

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Konstantin Dikov
Telerik team
answered on 07 Nov 2014, 03:35 PM
Hello Swapnil,

The RadGrid MasterTableView is assigned to the RadGridTaskActivity variable, but on the next lines you are using an undefined masterTable variable, so you need to change masterTable with RadGridTaskActivity.

For your convenience, following is a simple demonstration of the desired functionality:
<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
    <script type="text/javascript">
        function pageLoad() {
            var data = [{ "ID": 1, "Text": "Text1" }, { "ID": 2, "Text": "Text2" }];
            var mtv = $find("RadGrid1").get_masterTableView(); mtv.set_dataSource(data); mtv.dataBind();
        }
 
        function ClearItems1() {
            var masterTable = $find("<%= RadGrid1.ClientID %>").get_masterTableView();
            masterTable.set_dataSource([]);
            masterTable.dataBind();
        }
    </script>
</telerik:RadCodeBlock>
 
<telerik:RadGrid runat="server" ID="RadGrid1" AutoGenerateColumns="false">
    <MasterTableView>
        <Columns>
            <telerik:GridBoundColumn DataField="ID" HeaderText="ID">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="Text" HeaderText="Text">
            </telerik:GridBoundColumn>
        </Columns>
    </MasterTableView>
    <ClientSettings>
        <ClientEvents OnCommand="function(){}" />
    </ClientSettings>
</telerik:RadGrid>
 
<telerik:RadButton runat="server" ID="RadButton1" AutoPostBack="false" Text="Clear data" OnClientClicked="ClearItems1"></telerik:RadButton>

Hope this helps.


Regards,
Konstantin Dikov
Telerik
 

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Swapnil
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Konstantin Dikov
Telerik team
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