如何确定在TableLayoutPanel中单击的单元格？

Question

我有一个TableLayoutPanel,我想在我点击的单元格中添加一个控件.

问题是我无法确定在运行时单击的单元格.

如何确定单击的单元格？

Answer 1

您可以使用GetColumnWidths和GetRowHeights方法来计算单元格行和列索引:

Point? GetRowColIndex(TableLayoutPanel tlp, Point point)
{
    if (point.X > tlp.Width || point.Y > tlp.Height)
        return null;

    int w = tlp.Width;
    int h = tlp.Height;
    int[] widths = tlp.GetColumnWidths();

    int i;
    for (i = widths.Length - 1; i >= 0 && point.X < w; i--)
        w -= widths[i];
    int col = i + 1;

    int[] heights = tlp.GetRowHeights();
    for (i = heights.Length - 1; i >= 0 && point.Y < h; i--)
        h -= heights[i];

    int row = i + 1;

    return new Point(col, row);
}

用法:

private void tableLayoutPanel1_Click(object sender, EventArgs e)
{
    var cellPos = GetRowColIndex(
        tableLayoutPanel1,
        tableLayoutPanel1.PointToClient(Cursor.Position));
}

但请注意,如果单元格尚未包含控件,则仅引发click事件.