Save data in datagridview with vbnet2005

[salemkoten]

Can anybody help me?
This is an error:

Missing the DataColumn 'ColumnID' in the DataTable 'project' for the SourceColumn 'ColumnID'.

In this code:

Private Sub saveBNavigator_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles saveBNavigator.Click
        Me.Validate()
        Me.ProjectDataBindingSource.EndEdit()
        If ds.HasChanges Then
            Dim cmb As New SqlCommandBuilder(Me.ProjectDataAdapter)
         Try
            Me.ds.Tables("project").GetChanges()
            ProjectDataAdapter.Update(ds.Tables("Project"))
        Catch ex As Exception
            MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK, MessageBoxIcon.Error)
         End Try
      End If
  End Sub

Thanks in advance
SLKT