如何绑定一个DataGridViewComboBoxColumn

Question

我想用一个使用vb.net的字符串列表填充DataGridViewComboBoxColumn。 DataGridView包含其他显示非常重要的列。

Answer 1

也许，这可能会帮助你

''' <summary> 
''' This example uses no backend data source. 
''' 
''' Two controls, DataGridView named DataGridView1 
''' and one Label named Label1 
''' 
''' DataGridView has two columns created in the IDE 
''' Column1 - DataGridViewComboBoxColumn 
'''   * DisplayStyle = DataGridViewComboBoxDisplayStyle. 
'''    Nothing set in the DataGridView Columns editor 
''' Column2 - DataGridViewTextBoxColumn, nothing changed in settings 
''' 
''' </summary> 
''' <remarks></remarks> 
Public Class Form2 
    Private Sub Form2_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load 

     CType(DataGridView1.Columns("Column1"), DataGridViewComboBoxColumn).DataSource = _ 
      New String() {"Add", "Subtract", "Divide", "Multiply", "Total"} 

     DataGridView1.Rows.Add(New Object() {"Divide", "B1"}) 
     DataGridView1.Rows.Add(New Object() {"Add", "B2"}) 
     DataGridView1.Rows.Add(New Object() {"Subtract", "B3"}) 
     DataGridView1.Rows.Add(New Object() {"Add", "B4"}) 
     DataGridView1.Rows.Add(New Object() {"Multiply", "B5"}) 
    End Sub 
    ''' <summary> 
    ''' If the event is triggered by the DataGridViewComboBoxColumn cast 
    ''' e.Control to a ComboBox and setup SelectionChangedCommitted event 
    ''' so that when the current cell value changes we can get it. 
    ''' </summary> 
    ''' <param name="sender"></param> 
    ''' <param name="e"></param> 
    ''' <remarks></remarks> 
    Private Sub DataGridView1_EditingControlShowing(_ 
     ByVal sender As Object, _ 
     ByVal e As DataGridViewEditingControlShowingEventArgs) _ 
    Handles DataGridView1.EditingControlShowing 

     If DataGridView1.Columns(DataGridView1.CurrentCell.ColumnIndex).Name = "Column1" Then 
      Dim cb As ComboBox = TryCast(e.Control, ComboBox) 
      RemoveHandler cb.SelectionChangeCommitted, AddressOf _SelectionChangeCommitted 
      AddHandler cb.SelectionChangeCommitted, AddressOf _SelectionChangeCommitted 
     End If 

    End Sub 
    Private Sub _SelectionChangeCommitted(sender As Object, e As EventArgs) 
     Label1.Text = CType(sender, DataGridViewComboBoxEditingControl).Text 
    End Sub 
    Private Sub DataGridView1_CellEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) 
     If DataGridView1.Columns(e.ColumnIndex).Name = "Column1" Then 
      If IsComboBoxCell(DataGridView1(e.ColumnIndex, e.RowIndex)) Then 
       SendKeys.Send("{F4}") 
      End If 
     End If 
    End Sub 
    Private Sub Form2_Shown(sender As Object, e As EventArgs) Handles Me.Shown 
     AddHandler DataGridView1.CellEnter, AddressOf DataGridView1_CellEnter 
    End Sub 
    Public Function IsComboBoxCell(ByVal sender As DataGridViewCell) As Boolean 
     If sender.EditType IsNot Nothing Then 
      Return (sender.EditType Is GetType(DataGridViewComboBoxEditingControl)) 
     Else 
      Return False 
     End If 
    End Function 
End Class