[英]Get selected index of `DataGridViewComboBox`
When you add a ComboBoxColumn
in DataGridView
, I do not know how to handle the change event of ComboBox
. 在
DataGridView
添加ComboBoxColumn
时,我不知道如何处理ComboBox
的change事件。
'Adding To DGV data on form load
Dim cmbovoce As New DataGridViewComboBoxColumn()
cmbovoce.HeaderText = "Fruit"
cmbovoce.Name = "cmbovoce"
cmbovoce.MaxDropDownItems = 4
cmbovoce.Width = 100
cmbovoce.Items.Add("apple")
cmbovoce.Items.Add("pear")
cmbovoce.Items.Add("cherries")
cmbovoce.Items.Add("plums")
DataGridView1.Columns.Add(cmbovoce)
I strongly recommend you to use Cell events, such as CellValidating
, CellValueChanged
, ... to detect changes. 我强烈建议您使用Cell事件(例如
CellValidating
, CellValueChanged
,...)来检测更改。 The combobox that you are trying to handle its SelectedIndexChange
event, is a unique instance for all cells. 您尝试处理其
SelectedIndexChange
事件的组合框是所有单元格的唯一实例。
Anyway, if you want to know how to handle SelectedIndexChange
event of it,you can do it this way: 无论如何,如果您想知道如何处理它的
SelectedIndexChange
事件,可以这样进行:
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim c = New DataGridViewComboBoxColumn()
c.HeaderText = "Fruit"
c.Name = "c"
c.MaxDropDownItems = 4
c.Width = 100
c.Items.Add("apple")
c.Items.Add("pear")
c.Items.Add("cherries")
c.Items.Add("plums")
Me.DataGridView1.Columns.Add(c)
For index = 1 To 5
Me.DataGridView1.Rows.Add()
Next
End Sub
Private Sub DataGridView1_EditingControlShowing(sender As Object, e As DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing
If (TypeOf (e.Control) Is ComboBox) Then
Dim combo = CType(e.Control, ComboBox)
RemoveHandler combo.SelectedIndexChanged, AddressOf c_SelectedIndexChanged
AddHandler combo.SelectedIndexChanged, AddressOf c_SelectedIndexChanged
End If
End Sub
Private Sub c_SelectedIndexChanged(sender As Object, e As EventArgs)
If (Me.DataGridView1.Columns(Me.DataGridView1.CurrentCell.ColumnIndex).Name = "c") Then
Dim combo = CType(sender, ComboBox)
'Do something with combo
End If
End Sub
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