Winforms-将新表单直接定位在Datagridview的父级选定行下 [英] Winforms - Position new form directly under Datagridview selected row of parent

问题描述

我有一个带有DataGridView的表单。我选择一行数据（总是单行）。单击按钮后，我想打开一个新表单并将其始终直接放置在所选行的下面。我应该怎么做？

I have a form with a DataGridView on it. I select a row (always a single row) of data. After I click a button I would like to open a new form and always position it directly under the selected row. How should I do this?

在我的按钮中，单击下面的按钮：

In my button click I do something like this:

private void myBtn_Click(object sender, EventArgs e)
    {
        if (myDGV.SelectedCells.Count > 0)
        {
            int i = myDGV.SelectedCells[0].RowIndex;
            DataGridViewRow r = myDGV.Rows[i];

            // READ SOME DATA FROM THE ROW

            newForm form = new newForm();
            //POPULATE THE NEW FORM WITH DATA
            form.ShowDialog(this); //POSITION OF THIS FORM SHOULD BE DIRECTLY UNDER SELECTED ROW
        }
    }

推荐答案

您可以使用 DataGridView.GetRowDisplayRectangle 以获得数据网格视图客户端坐标中的行矩形，然后 Control.RectangleToScreen 将其转换为确定新表单位置所需的屏幕坐标，例如：

You can use DataGridView.GetRowDisplayRectangle to obtain the row rectangle in data grid view client coordinates, then Control.RectangleToScreen to convert them to a screen coordinates needed for determining the new form location, like this:

private void myBtn_Click(object sender, EventArgs e)
{
    if (myDGV.SelectedCells.Count > 0)
    {
        int i = myDGV.SelectedCells[0].RowIndex;
        DataGridViewRow r = myDGV.Rows[i];

        // READ SOME DATA FROM THE ROW

        newForm form = new newForm();
        //POPULATE THE NEW FORM WITH DATA ...

        // Position the form under the selected row
        form.StartPosition = FormStartPosition.Manual;
        var rect = myDGV.RectangleToScreen(myDGV.GetRowDisplayRectangle(i, false));
        form.Location = new Point(rect.Left, rect.Bottom);

        form.ShowDialog(this);
    }
}

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