请问关于bitmap释放问题

[zhangyang19911234]

public class drawPictureBox(Pen pen,PictureBox pb)
{
Bitmap bt=new Bitmap(100,100);
Graphics g=Graphics.FromImag(bt);
g.DrawRectangle(pen,0,0,50,50);
pb.Image=bt;
bt.Dispos();
}
为什么我加上bt.dispos()会报错，不加就不会报错，谁能看看谢谢

[xtiu77]

Graphics g=Graphics.FromImag(bt); 先释放g

[zhangyang19911234]

释放了的 也报错 光释放g还不会报错

[真相重于对错]

Graphics g = Graphics.FromHwnd( pb); g.DrawRectangle(pen, 0, 0, 50, 50); g.Dispose();

[Janky]

PictureBox 引用了你的bitmap 。。 不能释放啊。