用Save来保存图像，为什么不可以用相同的名字来覆盖掉原来的图片？那要怎么才能覆盖图片？
我的代码如下
private void button1_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "位图文件(*jpeg)|*.jpg|BMP(*.bmp)|*.bmp";
openFileDialog1.FilterIndex = 4;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
FileName = openFileDialog1.FileName;

Bitmap pic = new Bitmap(FileName);
this.textBox1.Text = FileName;
pictureBox1.Image = pic;

string shortName = FileName.Substring(FileName.LastIndexOf("\\") + 1);
string adr = AppDomain.CurrentDomain.BaseDirectory shortName;
textBox2.Text = adr;

pictureBox1.Image.Save(adr);
Bitmap ic = new Bitmap(adr);

this.pictureBox2.Image = ic;
Image myThumbnail = ic.GetThumbnailImage(80, 100, null, IntPtr.Zero);
MessageBox.Show("ok");
}
}
如果保存相同的图片两次就出错，说“GDI+发生一般性错误”
但是如果不是相同的图片就不会出错。怎么解决阿

我操
你直接删除在弄上去不就得了
还覆盖

////怎么用语句删除?

来人啊

File.Delete(图片路径);

还是觉得图片覆盖（替换）比较适合我，怎么办啊，怎么才能覆盖图片呢？！！

那就按照原来的图片路径进行保存啊.

是啊,我是用Save来保存的，就是一楼的代码。却说GDI+发生一般性错误，那怎么办啊

private void SaveBtn_Click(object sender, System.EventArgs e) //保存
{
SaveFileDialog saveFileDlg=new SaveFileDialog();
saveFileDlg.Title="Save Image As";
saveFileDlg.FileName = curFileName;
saveFileDlg.OverwritePrompt=true;
saveFileDlg.Filter=
"All Image files|*.bmp;*.gif;*.jpg;*.ico;"+"*.emf;*.wmf|Bitmap Files(*.bmp;*.gif;*.jpg;"+"*.ico)|*.bmp;*.gif;*.jpg;*.ico|"+
"Meta Files(*.emf;*.wmf;*.png)|*.emf;*.wmf;*.png";
saveFileDlg.ShowHelp=true;
if(saveFileDlg.ShowDialog()==DialogResult.OK)
{
string fileName=saveFileDlg.FileName;
string strFilExtn=fileName.Remove(0,fileName.Length-3);
switch(strFilExtn)
{case"BMP":
curImage.Save(fileName,ImageFormat.Bmp);
break;
case"bmp":
curImage.Save(fileName,ImageFormat.Bmp);
break;
case"jpg":
curImage.Save(fileName,ImageFormat.Jpeg);
break;
case"gif":
curImage.Save(fileName,ImageFormat.Gif);
break;
case"JPG":
curImage.Save(fileName,ImageFormat.Jpeg);
break;
case"tif":
curImage.Save(fileName,ImageFormat.Tiff);
break;
case"png":
curImage.Save(fileName,ImageFormat.Png);
break;
default:
curImage.Save(fileName=fileName+".bmp",ImageFormat.Bmp);
break;
}
curFileName=saveFileDlg.FileName;
this.Text="Is drawing \t"+curFileName;


}

}
这是我的，你看一下，没问题

saveFileDlg.OverwritePrompt=true;
重点