// Send the new value to client side
ClientScript.RegisterStartupScript
(GetType(), "Javascript", "javascript: setText('" + id + "'); ", true);

In my client side code, I set the value to WebCombo. Here’s the script below:

function setText(val) {
var WebCombo1 = ISGetObject("WebCombo1");
// Set the WebCombo value
WebCombo1.SetText(val, true);
} 

Hello,

I apologize for any inconvenience this problem may have caused you.

I have made a simple sample that maybe similar with your application scenario.
I use LinqDataSource with Northwind.mdf database and Shippers table. Then I bind to WebCombo.
In WebCombo, I set DataTextField property to "Phone" & DataValueField to " CompanyName ".

In Selecting() server side event, I add query code like you did. Here’s the snippet code below:

protected void LinqDataSource1_Selecting(object sender, LinqDataSourceSelectEventArgs e){
   LinqDataSource1.Where = @"ShipperID=1";
}

But unfortunately, I can’t replicate your issue on my end. I attached the screenshot of my sample’s result (wcLinqDataSource.jpg file).

Actually, to filter another field that is not the value or text, simply use “AdditionalSeacrhProperty”. By using this property, you would no longer to requery manually.
For further information about AdditionalSearchField feature, you could in WebCombo’s documentation. You also could see in WebCombo’s sample (AdditionalSearchField.aspx)

But if that feature doesn’t suit with your scenario, would you mind to telling me step-by-step How can I reproduce your issue.
Or if you don’t mind, could you attach your simple sample that indicate your issue? So I can analyze your issue.

Thank you.

Regards,
Hans

Hello,

Let me show the example format code in OnUnhandledError() function.
Here’s the script below:

        function WebGrid1_OnUnhandledError(controlId, tblName, lastRequestObject, errorString) {            var WebGrid1 = ISGetObject(controlId);
            //delay function before call errorBox() function
            window.setTimeout(function () { errorBox(); }, 50);
            return true;
        }
        
        function errorBox() {
            // Get the object of ErrorMessage's Window
            var errorMessage = document.getElementById("wg_ErrorMsg");
            var box = errorMessage.parentNode.parentNode.parentNode.parentNode.parentNode.style;
            // Set the size of ErrorMessage's Window
            box.width = "500px";
            box.height = "500px";
            // Set your own ErrorMessage's text
            errorMessage.innerText = "Your Own Error Message";
            document.getElementById("tdStatIcon_WebGrid1").style.display = "none";
            document.getElementById("tdStat_WebGrid1").childNodes[0].childNodes[0].nodeValue = " ";
        }

Hope this helps. Thank you.
Regards,
Hans.

Hello,

There isn’t explanation about javascript function or method like GetWindowDivElement() in our documentation indeed.
If you want to know the existing method and property in WebDialogBox (or another control), you could use debugger method in your javascript function.
Actually, to resolve your issue, I looked for the method and property in WebDialogBox that contain the height value of the WebDialogBox. Then changed it to “%” value.
Or I can say, you should do research about the method and property in our control. So you can use the right method and property according to your needs.

Hope this helps. But If there is any question or issue, please do not hesitate to ask us again. I would be happy to help you. Thank you.

Regards,
Hans.

Hello,

I apologize for any inconvenience this problem may have caused you. Unfortunately, I can’t replicate your issue on my end.

Would you mind to tell me step-by-step How can I reproduce your issue.

Or if you don’t mind, could you attach your simple sample that indicate your issue? So I can analyze your issue.

Thank you.

Regards,

Hans