Hello,

Normally, you could not get it from server side because there is no method or property for this scenario. 
It only can be done via javascritp. However, you can pass the data from client(javascript) to server.

E.g

function WebGrid1_OnAfterResponseProcess(controlId, actionName, lastRequestObject, xmlResponseObject)
        {
            if (actionName != "Custom")
            {
                var WebGrid1 = ISGetObject(controlId);
                var pageIndex = WebGrid1.CurrentPageIndex;
                WebGrid1.AddInput("pageIndex", pageIndex.toString()); 
                WebGrid1.SendCustomRequest();
            }
            return true;
        }

 protected void WebGrid1_InitializePostBack(object sender, ISNet.WebUI.WebGrid.PostbackEventArgs e)   {
     if (e.Action == ISNet.WebUI.WebGrid.PostBackAction.Custom)
     {
          pageIndex = Request["pageIndex"] as string;
     }
   }

Regards,
Handy 

Hello Larry,

It is not possible to have 2 child at the same level. However, You can combine those child tables into one table. 
You can access a row in second table by using GetChildRow() method.

e.g

WebGrid1.RootTable.GetRow(0).GetChildRow(0);

Regards,
Handy 

Hello Eric,

I mean if there is any DataCaching for WebGrid that you used. You can also ready more about DataCaching in our WebGrid documentation. Or you told us about your WebGrid and WebServer settings.

Regards,
Handy

Hello Matt,

Have you ever tried our WebEssentials sample? It also uses MasterPage. The sample use Iframe to load page when use select a menu in WebEssentials.
For more information, please try to see our WebEssentials sample and let me know if it is close enough or not with what you are looking for.

WebEssentials Sample >> C:\Program Files\Intersoft Solutions\Intersoft WebUI Studio 2010 R2\Samples\For ASP.NET\ISNet.WebUI.Samples\cs\WebEssentials

Regards,
Handy

Hello Murthy,

I assume you use dropdownlist as a parameter control or filter to bind our WebGrid. Please correct me if I am mistakenly in understanding your issue.
Do you bind WebGrid programmatically (query) or use a datasource control?
If it is programmatically, please let me know how do you bind WebGrid?
Normally, you should bind WebGrid at OnInitializeDataSource event.
To show your column structure, you need to define the column or use RetrieveStructure() instally at OnPrepareDataBinding event.
I hope you can provide more details regarding this issue. We will need it to investigate your issue.

Regards,
Handy