Since we could not access the WebGrid during WebService we will not be able to refresh the Grid in the WebService. However, our WebFlyPostBack already have OnResponseSuccess client side event handler that you could use to reference the WebGrid object and refresh the grid.

We have already provided a demonstration of the OnResponseSuccess client side event handelr in SimpleTypeWS.aspx page on the WebFlyPostBackManager folder under WebDesktop sample.

Unfortunately, we could not replicate the issue on our 64bit environment. Our developer also assures me that the 32bit application will only need to be set to true if you are using WebGrid charting.

Attached is the simple project I used in order to test the issue. I already used WebInput 4 build 4 and WebUI Framework 3 build 753.

As a workaround for such scenario, you could try using ValidatorEnable(val, enable) function, as detailed in ASP .NET validation in depth, during OnClick client side item command event handler.

In my test, I am using ASP .NET required field validator and during item command click, I could disable the required field validator using this snippet:

function WebMenuBar1_OnClick(ctrlId)
{
    ValidatorEnable(RequiredFieldValidator1, false);
}

In order to show the filter text for dropdownlist when you are filtering programmatically you will need to set the filter text manually in the corresponding filter row cell.

Here is a snippet for such scenario, the value of the filter is 2 while the filter text is Interest 1 and the filtered cell is the fourth cell in the WebGrid:

function FilterGrid() 
{
    var grid = ISGetObject("wgTest");

    var newFilter = new WebGridFilter(); // create new Filter configuration
    newFilter.ColumnMember = "Interest";
    newFilter.FilterType = "EqualTo";
    newFilter.FilterText = "2";

    grid.RootTable.FilteredColumns.Add(newFilter);
    grid.RootTable.FilteredColumns.Add(newFilter2);
    grid.RootTable.UpdateUI();
    grid.Refresh(); // apply changes

    var colHeaderRows = grid.RootTable.GetElement(WG40.COLHEADER, WG40.HTMLROW).getElementsByTagName("tr");
    for(var i = 0; i < colHeaderRows.length; i++)
    {
        var colHeader = colHeaderRows[i];
        if (colHeader.getAttribute("type") == "FilterRow") 
        {
            colHeader.getElementsByTagName("td")[4].getElementsByTagName("span")[0].innerHTML = "Interest 1";

        }
    }
}

Based on my discussion with the developer, StackButton visibility property will not work because it is only the control model, in order for the visibility property to work you will need to set it to the control element.

My test show modifying visibility will work during WebFishEyeButton click event handler. However, there will be an empty space where the stackbutton resides. Here is the snippet if you would like to try it yourself:

private void FishEye1_ButtonClick(object sender, ISNet.Silverlight.WebAqua.WebFishEyeButtonEventArgs e)
{
    if (e.Button.ItemName == "btnSearch")
    {
        Storyboard toolbarDelay = new Storyboard() { BeginTime = TimeSpan.FromSeconds(0.1) };
        toolbarDelay.Completed += (s, evt) => {
            ((WebFishEyeButton)e.Button).StackButtons[0].GetButtonElement().Visibility = System.Windows.Visibility.Collapsed;
        };
        toolbarDelay.Begin();
    }
}

For such scenario we suggest removing the stackbutton in order to display the stackbutton correctly.

If you are interested, we will release WebUI Studio 2010 R1 RC that will inlcude new version of our Silverlight product soon. Please check http://www.intersoftpt.com regularly for further details regarding our RC.