为什么以下代码不起作用(使用 Word 文档和 PDF 文件测试)?
保存的文件会启动正确的应用程序,但它已损坏且无法打开。
OpenFileDialog openFileDialog1 = new OpenFileDialog();
if (openFileDialog1.ShowDialog() != DialogResult.OK)
return;
string filename = openFileDialog1.FileName;
FileStream stream = File.OpenRead(filename);
byte[] array = new byte[stream.Length];
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.FileName = filename;
if (DialogResult.OK != saveFileDialog1.ShowDialog())
return;
FileInfo fi = new FileInfo(saveFileDialog1.FileName);
using (FileStream fs = fi.OpenWrite())
{
fs.Write(array, 0, array.Length);
}
最佳答案
使用文件字节数组方法以获得更好的结果。
此外,每当您使用一次性对象时,请使用 using
。
byte[] array;
string filename;
using (OpenFileDialog openFileDialog1 = new OpenFileDialog())
{
if (openFileDialog1.ShowDialog() != DialogResult.OK)
return;
filename = openFileDialog1.FileName;
array = File.ReadAllBytes(filename);
}
using (SaveFileDialog saveFileDialog1 = new SaveFileDialog())
{
saveFileDialog1.FileName = filename;
if (DialogResult.OK != saveFileDialog1.ShowDialog())
return;
File.WriteAllBytes(array);
}
关于.net - 在 .NET Windows 窗体中读取和写入字节数组,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/8696324/