使用 SaveFileDialog 后，在 Bitmap.Save() 处的 GDI+ 处发生一般错误

A Generic error occurs at GDI+ at Bitmap.Save() after using SaveFileDialog(使用 SaveFileDialog 后，在 Bitmap.Save() 处的 GDI+ 处发生一般错误)

问题描述

我在 using 块中使用了以下代码块和更多代码:

I use the following code block with some more code inside the using block:

using (System.Drawing.Bitmap tempImg =
       (System.Drawing.Bitmap)tempObj.GetData(System.Windows.Forms.DataFormats.Bitmap))
{
    // ...
    tempImg.Save("..\..\testdata\tempImg.bmp", ImageFormat.Bmp);                            
    // ...
}

但我仍然收到错误:

GDI+ 发生一般错误

A Generic Error occured at GDI+

只有在我做了一些与 using 块内的代码无关的操作之后.在其他时候，这很好用.tempImg.bmp 也是一个临时文件，所以我在 using 块本身中删除了 tempImg.bmp.

only after I make some action which is not related to the code inside the using block. In other times this works well. Also the tempImg.bmp is a temporary file, so I delete the tempImg.bmp within the using block itself.

由于 tempImg 在 using 中，并且已将其处理，因此我认为应该解决锁定问题.

Since the tempImg is inside the using and this it's disposed, I think the locking problem should be solved.

谁能告诉我这段代码有什么错误?

Can someone please let me know what is the mistake in this code?

System.Drawing.Image 到 System.Drawing.Bitmap 作为 tempImg 的类型.

System.Drawing.Image to System.Drawing.Bitmap as the type of tempImg.

我已经确定只有在创建 SaveFileDialog 并且用户单击保存"后才会收到此错误.

I have identified I get this error only after SaveFileDialog is created and user clicks on 'Save'.

推荐答案

我终于找到了我的代码有什么问题，并想在这里提一下，因为我认为它可能对某人有用....

Finally I could find what was wrong in my code and would like to mention it here as I think it may be useful to someone....

由于我在 tempImg.Save 中给出了相对路径，并且用户在 SaveFileDialog 中单击保存"后，tempImg.Save 的实际路径变为:

As I have given a relative path in tempImg.Save, and after the user clicks 'Save' in SaveFileDialog, the actual path for tempImg.Save become :

SaveFileDialog指定的路径+相对路径

Path specified by SaveFileDialog + the relative path

自动.

因此如果路径不存在，就会出现这个错误.

Thus if the path does not exist, this error occurs.

感谢大家的回答.

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