Please try to enable AutoPostBack and set the value of PostBackMode property to FullPostBack. The snippet code of WebButton below works on RowCheckerColumn.aspx.

<ISWebDesktop:WebButton ID="WebButton1" runat="server" Height="20px" 
    OnClicked="WebButton1_Clicked" Text="Get Checked Rows in server" 
    AutoPostback="True" PostBackMode="FullPostBack">
</ISWebDesktop:WebButton>

AutoPostBack

WebButton can operate in client side or server side mode. The default is client side mode where AutoPostBack is set to False. When operates in client side mode, developers generally implement the OnClientClick client side event to execute the javascript codes to response the button click. Otherwise, when operates in server side mode, developers can write codes in OnClick server side event to response the button click. Optionally, developers can also handle both client and server side events for maximum interactivity. If the return value is false in client side event, the server post back will not be invoked further.

PostBackMode

Built on the top of Intersoft's unique WebUI.NET Framework, WebButton is taking advantage of FlyPostBack and ClientAction architecture enabling the Button to execute server side codes in Button's OnClick event without full page refresh. Since it implements the FlyPostBack and other interfaces, WebButton has the same power and capabilities as with other Intersoft's flagship products such as WebCombo.NET. Instead of FlyPostBack, WebButton also supports traditional page postback by setting it to FullPostBack value.

Hope this helps.

Hi Yudi,

 I got it! Thank you very much!

Glad to hear that the snippet code helps.

Should you need further assistance or run into any problems regarding our controls, feel free to post it into our community site. We would be happy to assist you again.