面对问题时，从datagridview单元格中的combobox中选择一个值时，必须在同一datacell中替换为文本框

发布于 2025-02-11 12:23:30 字数 646 浏览 2 评论 0原文

下面是我的ComboBox值源函数

   If e.ColumnIndex >= 0 And e.RowIndex >= 0 Then
        Dim row1 = New ArrayList()
        row1.AddRange(New Integer() {1, 2})
        p.Items.AddRange(row1.ToArray())
        DataGridView1(e.ColumnIndex, e.RowIndex) = p
    End If

下面的功能是在选择ComboBox的值之后，我们必须将ComboBox更改为同一单元格中的TextBox

    Dim combo1 As ComboBox = CType(sender, ComboBox)
    If combo1.SelectedIndex = 0 Then
        Dim Datas As New DataGridViewTextBoxCell
        Datas.Value = "S"
        DataGridView1.CurrentCell.Value = Datas
    End If

，但ComboBox未替换为文本框。

得到答复是高度赞赏的！！！

原文

below is my comboBox value populate function

   If e.ColumnIndex >= 0 And e.RowIndex >= 0 Then
        Dim row1 = New ArrayList()
        row1.AddRange(New Integer() {1, 2})
        p.Items.AddRange(row1.ToArray())
        DataGridView1(e.ColumnIndex, e.RowIndex) = p
    End If

below function is for after selecting value from comboBox, we have to change that combobox to textbox in same cell

    Dim combo1 As ComboBox = CType(sender, ComboBox)
    If combo1.SelectedIndex = 0 Then
        Dim Datas As New DataGridViewTextBoxCell
        Datas.Value = "S"
        DataGridView1.CurrentCell.Value = Datas
    End If

but comboBox have not replacing to textBox.

getting reply is highly appreciated!!!

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誰認得朕 2025-02-18 12:23:30

这是如此错误：

DataGridView1.CurrentCell.Value = Datas

您正在创建一个新单元格，然后尝试将其分配给现有单元格的value。这有什么意义？您不能在单元格内有一个单元格，也不能神奇地更改单元格的类型。如果您想要一个不同类型的单元格，则需要用该类型的新单元格代替现有单元格：

Dim currentCellAddress = DataGridView1.CurrentCellAddress
Dim columnIndex = currentCellAddress.X
Dim rowIndex = currentCellAddress.Y

DataGridView1(columnIndex, rowIndex) = Datas

This is so wrong:

DataGridView1.CurrentCell.Value = Datas

You are creating a new cell and then trying to assign that to the Value of the existing cell. How does that make sense? You can't have a cell inside a cell and you can't magically change the type of a cell. If you want a cell of a different type then you need to replace the existing cell with a new cell of that type:

Dim currentCellAddress = DataGridView1.CurrentCellAddress
Dim columnIndex = currentCellAddress.X
Dim rowIndex = currentCellAddress.Y

DataGridView1(columnIndex, rowIndex) = Datas

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