c# - TableLayoutPanel GetCellPosition 和 GetPositionFromControl，它们有何不同？

Question

这似乎是一个老生常谈的问题，但我发现有关这些方法的 Microsoft 文档缺乏任何细节。

TablelLayoutPanel.GetCellPosition(Control control) 和有什么区别和TableLayoutPanel.GetPositionFromControl(Control control) ？

我正在使用 .NET Framework 4

Answer 1

GetCellPosition 获取控件的声明位置，而 GetPositionFromControl 获取 TableLayoutPanel 为控件确定的实际位置。这些在大多数情况下都是相同的。以编程方式将多个控件设置到同一单元格(或使用 ColumnSpan 或 RowSpan 重叠单元格)，并查看结果有何不同。

将 TableLayoutPanel 添加到 Form 并复制以下代码。运行它并单击标签以查看差异。

Public Class Form1

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        For Index As Integer = 0 To 4
            Dim Control As New Label
            Control.Text = String.Format("Control {0}", Index)
            AddHandler Control.Click, AddressOf Control_Click
            TableLayoutPanel1.Controls.Add(Control, 0, 0)
        Next
    End Sub

    Private Sub Control_Click(sender As Object, e As EventArgs)
        Dim Pos1 As TableLayoutPanelCellPosition = TableLayoutPanel1.GetPositionFromControl(sender)
        Dim Pos2 As TableLayoutPanelCellPosition = TableLayoutPanel1.GetCellPosition(sender)
        Dim Text As String = String.Format("GetPositionFromControl = {0},{1}" & vbCrLf & "GetCellPosition = {2},{3}", Pos1.Column, Pos1.Row, Pos2.Column, Pos2.Row)
        MessageBox.Show(Text)
    End Sub
End Class