Question

c# 参数无效 未处理ArgumentException

Image img; private void button1_Click(object sender, EventArgs e) { Bitmap bmp; using ( bmp = new Bitmap(pictureBox1.Image.Width, pictureBox1.Image.Height)) { Graphics g = Graphics.FromImage(bmp); g.SmoothingMode = SmoothingMode.AntiAlias; g.DrawImage(pictureBox1.Image, new Rectangle(0, 0, pictureBox1.Image.Width, pictureBox1.Image.Height)); Color col = Color.Black; Pen p = new Pen(col, 8); Point po1 = new Point(100, 100); Point po2 = new Point(200, 100); g.DrawLine(p, po1, po2); pictureBox2.Image = (Image)bmp; pictureBox1.Image = (Image)bmp; bmp.Save(@"C:\Users\DHPX\Desktop\ILSpy.jpg"); } }

Answer 1

你后面贴 的代码与前面没什么关系，如果运行时一启动程序就出这个错，检查一下你的Form3的构造函数和Load之类的方法里的代码，可以单步执行进去看看。

Answer 2

pictureBox1.Image = new Bitmap(ds.Tables[0].ToString());