如何在C＃中捕获表单客户端到图像文件？ [英] How to capture client of form to image file in C#?

问题描述

大家好，

我有一个问题：我需要在C＃中捕获Form到图像文件。这是我的代码，但它不能正常工作，我想只获得客户区，而不是获得另一个形式的区域：

 public void GhiImage（） 
 {
 try 
 {
 SaveFileDialog SvDialog = new SaveFileDialog（）; 
 SvDialog.Title =Ghi thanh file anh！; 
 SvDialog.DefaultExt =bmp; 
 SvDialog.Filter =Ảnh位图（* .bmp）| * .bmp |Ảnhjpg（* .jpg）| * .jpg; 
 SvDialog.FilterIndex = 1; 
 
 if（SvDialog.ShowDialog（）== DialogResult.OK）
 {
 Graphics g = this.CreateGraphics（）; 
位图bmp =新位图（this.ClientRectangle.Width，this.ClientRectangle.Height）; 
 this.DrawToBitmap（bmp，this.ClientRectangle）; 
 bmp.Save（SvDialog.FileName）; 
 bmp.Dispose（）; 
} 
} 
捕获
 {
} 
} 

它包含所有表单（边框和客户区）。现在帮我修复我的代码以完全正常工作。谢谢大家。



我尝试了什么：



我编码，但它uncorrectly工作

解决方案

这两行：

<预LANG = C＃> BMP位图= new 位图（此 .ClientRectangle.Width，此 .ClientRectangle.Height）;
<跨度类= 代码关键字>此 .DrawToBitmap（BMP，<跨度类= 代码关键字>此 .ClientRectangle）;

允许您指定要绘制到位图的客户区的哪个部分。在这里它确实想要你要求：它绘制整个客户区。如果你只想要它的一部分，你必须定义一个界定这个部分的矩形，并使用这个矩形而不是 ClientRectangle 。

Hi all,
I have a problem: I need to capture of Form to image file in C#. This is my code to do this, but it is not to work correctly, I want to get only client area, not get another area of form:

public void GhiImage()
        {
            try
            {
                SaveFileDialog SvDialog = new SaveFileDialog();
                SvDialog.Title = "Ghi thanh file anh!";
                SvDialog.DefaultExt = "bmp";
                SvDialog.Filter = "Ảnh bitmap (*.bmp)|*.bmp |Ảnh jpg (*.jpg)|*.jpg";
                SvDialog.FilterIndex = 1;

                if (SvDialog.ShowDialog() == DialogResult.OK)
                {
                    Graphics g = this.CreateGraphics();
                    Bitmap bmp = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height);
                    this.DrawToBitmap(bmp, this.ClientRectangle);
                    bmp.Save(SvDialog.FileName);
                    bmp.Dispose();
                }
            }
            catch
            {
            }
        }

It contains all of Form (border and client area). Now help me fix my code to work exactly. Thanks you, everyone.

What I have tried:

I coded it, but it worked uncorrectly!

解决方案

Both these lines:

Bitmap bmp = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height);
this.DrawToBitmap(bmp, this.ClientRectangle);

allow you to specify which part of the client area you want to draw to your bitmap. Here it does exactly want you asked for: it draws the entire client area. If you want only a portion of it, you have to define a rectangle delimiting this portion, and use this rectangle instead of ClientRectangle.

这篇关于如何在C＃中捕获表单客户端到图像文件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！