How do I show or hide Add/Edit/Delete buttons depending on user?

I have set up the ASPxGridview on a standard web page, and it is working wonderfully, but everyone visiting the page has full Add/Change/Delete permissions. I want to be able to restrict these permissions so that only specific users can see the New/Edit/Delete buttons, and everyone else has read-only viewing access.

I can't find any tutorial or example on how to enable/disable the buttons. Obviously the login stuff is a separate issue.

Please can you direct me to some sample code for enabling/disabling the buttons at run-time?

Hello Donn,

To accomplish this task, you can update the Visible property of the corresponding GridViewCommandColumn buttons (DeleteButton, EditButton, etc), or hide a GridViewCommandColumn completely.
Refer to this sample code snippet:

Thank you,
Alex.

Thanks for such a prompt reply. It gives me great confidence in this product.

Where do I put this code? I tried the page's Form_Load and ASPxGridView1_Load events, but I'm getting

Compiler Error Message: BC30002: Type 'GridViewCommandColumn' is not defined.

error message, which I don't fully understand. I'm an experienced VB6/VBA programmer, but VB.NET and ASPX is still a little new, so please forgive these very basic questions ;-)

Hello Donn,

Thanks for the update. It seems that you might need to use the Imports directive to add the DevExpress.Web.ASPxGridView namespace. For instance:

Imports DevExpress.Web.ASPxGridView
..
Let me know whether this helps.

Thank you,
Alex.

The code works, but I think I've attached it to the wrong event.

My entire page code looks like this:
>>>
Imports System.Web.DynamicData
Imports DevExpress.Web.ASPxGridView

Partial Class List
    Inherits System.Web.UI.Page

    Protected blnAddYN As Boolean
    Protected blnChgYN As Boolean
    Protected blnZoomYN As Boolean
    Protected blnDelYN As Boolean

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        blnAddYN = False
        blnChgYN = False
        blnDelYN = False
        blnZoomYN = False
    End Sub

    Protected Sub ASPxGridView1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles ASPxGridView1.Load
        For i As Integer = 0 To Me.ASPxGridView1.Columns.Count - 1
            If TypeOf Me.ASPxGridView1.Columns(i) Is GridViewCommandColumn Then
                CType(Me.ASPxGridView1.Columns(i), GridViewCommandColumn).NewButton.Visible = blnAddYN
                CType(Me.ASPxGridView1.Columns(i), GridViewCommandColumn).UpdateButton.Visible = blnChgYN
                CType(Me.ASPxGridView1.Columns(i), GridViewCommandColumn).DeleteButton.Visible = blnDelYN
                CType(Me.ASPxGridView1.Columns(i), GridViewCommandColumn).EditButton.Visible = blnZoomYN
                Exit For
            End If
        Next i
    End Sub
End Class
<<<

If I set blnZoomYN to True, then the "Edit" button appears correctly, but when I click to edit a record, the "Update" button appears. Should I attach this code to a different event as well?

Hi Donn,

Please move the ASPxGridView1_Load event handler code to the Page_Load event handler.
When modifying ASPxGridView properties ar runtime, you should do this on each postback.
Let me know how this goes.

Thanks,
Alex.

sorted. Thanks!