GDI +中的一般錯誤發生在屏幕捕獲中

Question

我正在編寫一個需要截屏的應用程序，但隨機它會拋出一個GDI +一般錯誤。不幸的是，一個通用的錯誤並不能幫助我很好的調試。我對屏幕捕獲代碼：

static void CaptureScreen() 
    { 
     bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb); 
     // Create a graphics object from the bitmap 
     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(savePath + "img" + times.ToString()+ ".png", ImageFormat.Png); 
    } 

哪個會偶爾給我一個普通的錯誤，所以我想：「也許我應該處理位圖和圖形變量」

static void CaptureScreen() 
    { 
     bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb); 
     // Create a graphics object from the bitmap 
     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(savePath + "img" + times.ToString()+ ".png", ImageFormat.Png); 

     bmpScreenshot.Dispose(); 
     gfxScreenshot.Dispose(); 
    } 

，然後刪除該文件：

  for (int i = 1; i == times; i++) 
      { 
       File.Delete(savePath + @"\img" + i.ToString() + ".png"); 
      } 
      times = 0; 

但是，如果您運行兩次它說，文件正在使用，如果你正在寫同一個文件。有任何想法嗎？

Answer 1

下可能會有所幫助：

using (bmpScreenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb)) 
using (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); 

    Bitmap bmpScreenshot2 = new Bitmap(bmpScreenshot); // FIX: Change "S" to "s"... 
    // Save the screenshot to the specified path that the user has chosen 
    bmpScreenshot2.Save(savePath + "img" + times.ToString()+ ".png", ImageFormat.Png); 
}