画四条直线然后组合成矩形

 

private void button1_Click(object sender, EventArgs e)
{
    Excel.Shape lineA = Globals.Sheet1.Shapes.AddLine(25, 140, 495, 140);
    Excel.Shape lineB = Globals.Sheet1.Shapes.AddLine(495, 140, 495, 305);
    Excel.Shape lineC = Globals.Sheet1.Shapes.AddLine(25, 305, 495, 305);
    Excel.Shape lineD = Globals.Sheet1.Shapes.AddLine(25, 140, 25, 305);
    object[] shapes = { lineA.Name, lineB.Name, lineC.Name, lineD.Name };
    Excel.ShapeRange shapeRange = Globals.Sheet1.Shapes.get_Range(shapes);
    shapeRange.Group();
}