创建和删除图片/屏幕截图

Question

好吧，发生这种情况时，我正在编写一个程序来拍摄一些截图，并且在处理另一个进程正在使用的文件时遇到了一些困难，希望有人可以帮助我找到一种方法来“关闭”这个过程或让我知道如何继续。

//Create a new bitmap. 
var bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, 
           Screen.PrimaryScreen.Bounds.Height, 
           PixelFormat.Format32bppArgb); 

// Create a graphics object from the bitmap. 
var gfxScreenshot = Graphics.FromImage(bmpScreenshot); 

// Take the screenshot from the upper left corner to the right bottom corner. 
gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, 
          Screen.PrimaryScreen.Bounds.Y, 
          0, 
          0, 
          Screen.PrimaryScreen.Bounds.Size, 
          CopyPixelOperation.SourceCopy); 

// Save the screenshot to the specified path that the user has chosen. 
//bmpScreenshot.Save(nomeScreen + ".jpeg", ImageFormat.Jpeg); 
bmpScreenshot.Save(@"c:\temp\"+nomeScreen+".jpeg", ImageFormat.Jpeg); 
count++; 
nomeScreen = "S"+Convert.ToString(count); 

这是我（我知道，可怜的编程技能）需要几个截图，不过后来我想他们从地方被删除，其中我将它们存储

http://gyazo.com/4b50945b0d157d082f7897e34a705560

这是它发生的一个截图。如何“关闭”位图？该程序迄今为止唯一的动作是截图并删除它们。

string pathString = "C:\\temp"; 
DirectoryInfo d = new DirectoryInfo(pathString); 
foreach (var k in d.GetFiles("*.jpeg")) 
{ 
    File.Delete(pathString+"\\" + k); 
} 

Answer 1

我相信你需要在bmpScreenshot.Save（）之后调用bmpScreenshot.Close（）。

对不起，我正在打电话，无法检查它是否关闭。

试试这个：

//Create a new bitmap. 
using(var bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, 
           Screen.PrimaryScreen.Bounds.Height, 
           PixelFormat.Format32bppArgb)) 
{ 

// Create a graphics object from the bitmap. 
var gfxScreenshot = Graphics.FromImage(bmpScreenshot); 

// Take the screenshot from the upper left corner to the right bottom corner. 
gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, 
          Screen.PrimaryScreen.Bounds.Y, 
          0, 
          0, 
          Screen.PrimaryScreen.Bounds.Size, 
          CopyPixelOperation.SourceCopy); 

// Save the screenshot to the specified path that the user has chosen. 
//bmpScreenshot.Save(nomeScreen + ".jpeg", ImageFormat.Jpeg); 
bmpScreenshot.Save(@"c:\temp\"+nomeScreen+".jpeg", ImageFormat.Jpeg); 
} 
count++; 
nomeScreen = "S"+Convert.ToString(count); 

---

所以我测试的代码，我得到了一些有趣的结果。

我有这样的：

private void button1_Click(object sender, EventArgs e) 
    { 
     string nomeScreen = "screenshot"+new Random().Next(); 
     screenshotPath = Application.StartupPath+"\\" + nomeScreen + ".jpeg"; 
     //Create a new bitmap. 
     /*using (*/ 
     var bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, 
          Screen.PrimaryScreen.Bounds.Height, 
          PixelFormat.Format32bppArgb);//) 
     // { 

      // Create a graphics object from the bitmap. 
     /*using (*/ 
     var gfxScreenshot = Graphics.FromImage(bmpScreenshot);//) 
      //{ 

       // Take the screenshot from the upper left corner to the right bottom corner. 
       gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, 
              Screen.PrimaryScreen.Bounds.Y, 
              0, 
              0, 
              Screen.PrimaryScreen.Bounds.Size, 
              CopyPixelOperation.SourceCopy); 

      //} 

      // Save the screenshot to the specified path that the user has chosen. 
      //bmpScreenshot.Save(nomeScreen + ".jpeg", ImageFormat.Jpeg); 
      bmpScreenshot.Save(screenshotPath, ImageFormat.Jpeg); 
     // } 
    } 

    private void button2_Click(object sender, EventArgs e) 
    { 
     File.Delete(screenshotPath); 
    } 

它工作正常，没有任何使用说明，虽然在我看来，这是好事，有两个注释掉那些的。也许你的问题在别处。你有没有检查你的文件夹的权限。也许你可以尝试保存到应用程序的exe文件的路径？这可能会解决它。如果确实如此，那么您需要检查“temp”文件夹的文件夹权限或您要保存的任何位置。

Answer 2

您可以配置（）的位图.....

bmpScreenshot.Dispose();