title: How to check if gridview editvalue changed through event handling
body: <p>I'm using devexpress tools.  I have code below that basically checks each control on a form and sets an event handler to the control by check if the value has changed.  upon form closing it will check if this is true and if it is, prompt to save.   It works fine now, but i want to check if a gridview within a gridcontrol has changed.  there is an event called cellvaluechanged under gridview. I want to add the handler to the gridview.cellvaluechanged, but i can't access it directly. It's inside a gridcontrol. how can i access this through code? </p>
  
  <pre><code>      'If TypeOf c Is GridControl Then
          '    Dim cb As GridControl = CType(c, GridControl)
          '    AddHandler cb.ViewCollection(0).GridControl ... dont know how to access gridview
  
          'End If
  </code></pre>
  
  <p>Here is my full solution working without the gridview check</p>
  
  <pre><code> Dim is_Dirty As Boolean = False
  
   Private Sub AddDirtyEvent(ByVal ctrl As Control)
  
  For Each c As Control In ctrl.Controls
      If TypeOf c Is TextEdit Then
          Dim tb As TextEdit = CType(c, TextEdit)
          AddHandler tb.EditValueChanged, AddressOf SetIsDirty
  
      End If
      'If TypeOf c Is ComboBoxEdit Then
      '    Dim cb As ComboBoxEdit = CType(c, ComboBoxEdit)
      '    AddHandler cb.SelectedIndexChanged, AddressOf SetIsDirty
  
      'End If
      If c.Controls.Count &gt; 0 Then
          AddDirtyEvent(c)
      End If
  
  Next
  
   End Sub
  
   Private Sub SetIsDirty(ByVal sender As System.Object, ByVal e As    System.EventArgs)
    is_Dirty = True
   End Sub
  
  Private Sub Form1_FormClosing(sender As Object, e As FormClosingEventArgs)     Handles Me.FormClosing
  
  If is_Dirty = True Then
      Dim dr As DialogResult = MessageBox.Show("Do you want save changes before leaving?", "Closing Well Info", MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2)
      If dr = Windows.Forms.DialogResult.Yes Then
          SimpleButtonSave.PerformClick()
            End If
  End If
  </code></pre>