Question

拥有datagridview，其中包含在datagridview创建者中手动创建的4列。第1列，第2列和第3列只是文本框列，但最后一列标记为组合框列。在我的表单上我有按钮，当用户点击它时，新行被添加到datagridview。对于前三列，从一些变量中填充数据，并且应该从数据源为用户填充最后一个组合框列，以便他可以从中选择其值。问题是这个组合框列有问题，到目前为止还无法填写。这是我的实际代码

Private Sub myButton_Click(sender As Object, e As EventArgs) Handles btnAddMatType.Click

Dim dt as DataTable
dt = New Variation().GetAll() 'returning Ids and Names

              Dim cbo = CType(dgvMaterials.Columns(3), DataGridViewComboBoxColumn)
              cbo.Items.AddRange(dt.AsEnumerable().Select(Function(s) s.Field(Of String)("Name")).ToArray())

            try
              Dim rodzajID as String = TreeMaterials.SelectedValue
              Dim rodzajName as string = TreeMaterials.SelectedNode.Text
              Dim material as string = TreeMaterials.SelectedNode.Parent.Text

              dgvMaterials.Rows.Add(material, rodzajName, rodzajID)
End Sub

也试过这个：

Private Sub myButton_Click(sender As Object, e As EventArgs) Handles btnAddMatType.Click
Dim dt as DataTable
dt = New Variation().GetAll() 'returning Ids and Names
Dim cbo = CType(dgvMaterials.Columns(3), DataGridViewComboBoxColumn)
cbo.DataSource = dt
cbo.ValueMember = "Id"
cbo.DisplayMember = "Name"
Dim rodzajID as String = TreeMaterials.SelectedValue
Dim rodzajName as string = TreeMaterials.SelectedNode.Text
Dim material as string = TreeMaterials.SelectedNode.Parent.Text

dgvMaterials.Rows.Add(material, rodzajName, rodzajID)
End Sub

在这两种情况下，每次用户点击按钮行都会添加到datagrid但最后一列的组合框为空。怎么解决？

Answer 1

尝试添加此行以将您的comboBox添加到所需列：

  dgvMaterials.Columns.Insert(3, cbo)

带有组合框的Datagridview无法填写

1 个答案: