在picturebox的图片上画一条线，怎么把这个图片保存？

[solomon2002]

保存后的图片必须有这条线

[cacoda]

//划线
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
e.Graphics.DrawLine(Pens.Blue, new Point(10, 10), new Point(20, 20));
}

//保存
Bitmap bmp = new Bitmap(pictureBox1.Size.Width,pictureBox1.Size.Height );
pictureBox1.DrawToBitmap(bmp, new Rectangle(new Point(0, 0), pictureBox1.Size));
bmp.Save(@"c:\a.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);

[熙风]

[Quote=引用 1 楼 cacoda 的回复:]
//划线
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
e.Graphics.DrawLine(Pens.Blue, new Point(10, 10), new Point(20, 20));
}

//保存
Bitmap bmp = new Bitmap(pictureBox1.Si……
[/Quote]

+1

[吾非大神]

picBox.Image.Save();

[startstartsvip]

同上

pictureBox1.Image.Save("01.bmp");