Question

我尝试在datagridview标题单元格下面打开一个表单。我有这个（它没有用）

private void button1_Click(object sender, EventArgs e)
{
    Form aForm = new Form();

    aForm.Text = @"Test";
    aForm.Top = this.Top + dataGridView1.Top - dataGridView1.GetCellDisplayRectangle(0, 0, false).Height;
    aForm.Left =  this.Left + dataGridView1.GetCellDisplayRectangle(0, 0, false).Left;
    aForm.Width = 25;
    aForm.Height = 100;
    aForm.ShowDialog();
}

我不知道如何根据datagridview单元格获得正确的左上角和右上角。

Answer 1

如果您考虑使用表单，则必须使用屏幕坐标计算其位置：

Form form = new Form();
form.StartPosition = FormStartPosition.Manual;
form.FormBorderStyle = FormBorderStyle.FixedSingle;
form.Size = new Size(dataGridView1.Columns[dataGridView1.CurrentCell.ColumnIndex].Width, 100);

Point c = dataGridView1.PointToScreen(dataGridView1.GetCellDisplayRectangle(
                                      dataGridView1.CurrentCell.ColumnIndex, 
                                      dataGridView1.CurrentCell.RowIndex, false).Location);
form.Location = new Point(c.X, c.Y);
form.BringToFront();
form.Show(this);

如果您发现使用表单时遇到问题，可以考虑改用Panel：

Point c = dataGridView1.PointToScreen(dataGridView1.GetCellDisplayRectangle(
                        dataGridView1.CurrentCell.ColumnIndex, 
                        dataGridView1.CurrentCell.RowIndex, false).Location);
Point r = this.PointToClient(c);
panel1.Location = new Point(r.X, r.Y);
panel1.BringToFront();

另请参阅How do I to get the current cell position x and y in a DataGridView?
和Position new form directly under Datagridview selected row of parent

在datagridviewcell下打开表单

1 个答案: