If you would like to handle click event during client side, you could use the ClientSideEventOnButtonClick to handle button click event, or you could use ClientSideEventOnStackButtonClick in order to handle the stack button click event.

You will need to add this event handler in the page that contains the XAP. Here is the snippet:

<script type="text/javascript" language="javascript">
    function WebFishEye1_OnClientClick(fishEyeObj, btnObj) {
        //Click handler
    }
</script>

We also provide server side event such as ButtonClick and StackButtonClick if you wish to handle the event in the server side.

The message box has already been shown in the Record row, however there seems to be a bug in WebGrid that caused a different behavior for NewRow row type. A bug report has been submitted to the developer. We will inform you if there is any progress or update regarding this issue.

In order to remove the cell value of the linked combo column, you will need to use the AfterItemSelected event handler of the parent WebCombo to set the cell value and text to empty string. Here is the snippet, Division column and SubDivision column is linked:

function wcDivision_OnAfterItemSelected(controlId)
{
	var wcDivision = ISGetObject(controlId);

	var grid = ISGetObject("grdObj");
	
	grid.GetSelectedObject().ToRowObject().GetCell('SubDivisionID').SetValue("", true);
	grid.GetSelectedObject().ToRowObject().GetCell('SubDivisionID').SetText("");

	return true;
}

This behavior is designed in WebTreeView for performance concern. WebTreeView will not populate the Nodes object recusively during onload. It will populate the Nodes object during certain event such as expand. Or you could manually trigger it using Get("Nodes") or GetArrayNodes.

Step 2 to 7 in the walkthrough has already detailed the requiredsteps to create the new GetDataBy query. Following all the steps in the article does not produce any error in my environment.

For MS SqlServer or Oracle, you should modify the query in the article to:

SELECT CustomerID, EmployeeID, Freight, OrderDate, OrderID, RequiredDate, ShipAddress, ShipCity, ShipCountry, ShipName, ShipPostalCode, ShipRegion, ShipVia, ShippedDate FROM Orders WHERE (CustomerID = @CustomerID)

In order to get the correct length, please use the

ISGetObject("treePortfolioNav").Nodes[0].Get("Nodes").length

The GetArrayNodes function will load all the collection to the JS object. You could manually build the collection using the Get("Nodes") function.