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Adding context menu dynamically giving error

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shadow asked on 05 Nov 2012, 02:09 PM
I am trying to show a context menu on mouse over of an image control.

Below is my code

Dim ControlsContainer As New Panel
           Dim InfoIcon As New Image
           Dim InfoContextMenu As New RadContextMenu
           Dim mi As New RadMenuItem
           ControlsContainer.ID = "pnlInfoContainer"
           InfoIcon.ID = "InfoImageIcon"
           InfoIcon.ImageUrl = "/mb/admin/images/plus.png"
           InfoIcon.Attributes.Add("onmouseover", "ShowInfoMenuOnLeftClick();")
           InfoContextMenu.ID = "mb_InfoContents_ContentextMenu"
           InfoContextMenu.ClientIDMode = System.Web.UI.ClientIDMode.Static
           mi.Text = "Home"
           Dim script As String = "<script type=""text/javascript""> function ShowInfoMenuOnLeftClick(sender, args) {     var contextMenu = $find('mb_InfoContents_ContentextMenu'); console.log(contextMenu);; } </script>"
           If Not Me.Page.ClientScript.IsStartupScriptRegistered("InfocontentsMenu") Then
               Me.Page.ClientScript.RegisterStartupScript(Me.Page.GetType, "InfocontentsMenu", script)
           End If
           Dim MenuTargetConfiguration As New ContextMenuControlTarget()
           MenuTargetConfiguration.ControlID = "InfoImageIcon"

I am getting a java script error with this code..

  1. Uncaught TypeError: Cannot read property 'target' of undefined Telerik.Web.UI.WebResource.axd:4660
    1. ShowInfoMenuOnLeftClickindex.aspx:560
    2. onmouseover

Can you help me!!

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Boyan Dimitrov
Telerik team
answered on 07 Nov 2012, 12:59 PM
Hello Farid,

I prepared a sample project that demonstrates how you can find the RadContextMenu when is either created in code behind or in the markup. I would also recommend you take a look at this online demo that shows how a context menu pops up on image hover.

Hope that this will lead you into right direction.

Boyan Dimitrov
the Telerik team
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