We help IT Professionals succeed at work.
Get Started

datagrid and combobox....how to avoid error when edit control is NOT combobox?

codefinger
codefinger asked
on
1,092 Views
Last Modified: 2012-05-09
The code attached ALMOST works, but when the edit control is a bound textbox on the same row, an error occurs...

Unable to cast object of type 'System.Windows.Forms.DataGridViewTextBoxEditingControl' to type 'System.Windows.Forms.ComboBox'.

How do I avoid activating the code in EditingControlShowing when I don't need it or want it?

Thanks in advance.
Private Sub DataGridViewForms_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DataGridViewForms.EditingControlShowing
        Dim editingComboBox As ComboBox = CType(e.Control, ComboBox)
        If Not editingComboBox Is Nothing Then
            AddHandler editingComboBox.SelectedIndexChanged, AddressOf editingComboBox_SelectedIndexChanged
        End If
    End Sub

    Private Sub editingComboBox_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)

        Dim comboBox1 As ComboBox = CType(sender, ComboBox)
        Dim dgr As System.Windows.Forms.DataGridViewRow = Nothing
        Dim fc As HPFFAFormClass = Nothing

        comboBox1.DisplayMember = "Description"
        comboBox1.ValueMember = "HPFDocType"

        dgr = Me.DataGridViewForms.CurrentRow
        fc = dgr.DataBoundItem
        fc.HPFDocType = comboBox1.SelectedValue
        Me.DataGridViewForms.Refresh()


    End Sub

Open in new window

Comment
Watch Question
This problem has been solved!
Unlock 1 Answer and 2 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE