C# 如何使图片保留在Picturebox上?
我正在Windows Mobile智能设备应用程序的图片盒上绘制图形。该图运行良好,但随后立即消失 我用了这句话:C# 如何使图片保留在Picturebox上?,c#,windows-mobile,picturebox,graphing,C#,Windows Mobile,Picturebox,Graphing,我正在Windows Mobile智能设备应用程序的图片盒上绘制图形。该图运行良好,但随后立即消失 我用了这句话: this.Invoke(new EventHandler(picture2_show)); 我的绘画方法是: private void picture2_show(object sender, EventArgs e) { using (Graphics objGraphics = this.pictureBox2.CreateGraphics()) {
this.Invoke(new EventHandler(picture2_show));
我的绘画方法是:
private void picture2_show(object sender, EventArgs e)
{
using (Graphics objGraphics = this.pictureBox2.CreateGraphics())
{
Pen redpen = new Pen(Color.Red, 1);
int picBoxWidth = pictureBox2.Size.Width;
int picBoxHeight = pictureBox2.Size.Height;
int halfWidth = pictureBox2.Size.Width / 2;
int halfHeight = pictureBox2.Size.Height / 2;
Graphics objGraphic = this.pictureBox2.CreateGraphics();
objGraphic.DrawLine(redpen, 0, 0, 0, picBoxHeight);
objGraphic.DrawLine(redpen, 0, picBoxHeight - 1, picBoxWidth, picBoxHeight - 1);
//Rectangle first = new Rectangle(0, halfHeight, picBoxWidth, halfHeight);
Pen bpen = new Pen(Color.LawnGreen, 3);
for (int i = 0; i < array.Length - 1; i++)
{
objGraphic.DrawLine(
bpen,
pictureBox2.Size.Width * i / array.Length,
pictureBox2.Size.Height - array[i],
pictureBox2.Size.Width * (i + 1) / array.Length,
pictureBox2.Size.Height - array[i + 1]);
}
}
}
private void picture2\u show(对象发送方,事件参数e)
{
使用(Graphics objGraphics=this.pictureBox2.CreateGraphics())
{
Pen redpen=新笔(颜色:红色,1);
int picBoxWidth=pictureBox2.Size.Width;
int picBoxHeight=pictureBox2.Size.Height;
int halfWidth=pictureBox2.Size.Width/2;
int halfHeight=pictureBox2.Size.Height/2;
Graphics objGraphic=this.pictureBox2.CreateGraphics();
对象绘制线(红色,0,0,0,picBoxHeight);
对象绘图线(红色,0,picBoxHeight-1,picBoxWidth,picBoxHeight-1);
//矩形优先=新矩形(0,半高,picBoxWidth,半高);
笔bpen=新笔(Color.LawnGreen,3);
for(int i=0;i
picturebox保持不变,但如何使图形不消失
非常感谢您的帮助 您需要使用
e.Graphics
在picturebox的Paint
事件中绘制图形要强制重新绘制,请调用
pictureBox2.Invalidate()
不要在
CreateGraphics()
上绘制,因为下次绘制控件时,它将被擦除。非常感谢!这真的很有帮助!不客气。您应该通过单击空心复选框来接受此答案。