该进程无法访问文件'directory \ file',因为它正被C#File Writer中的另一个进程使用

问题描述 投票:0回答:3

我尝试保存现有文件时收到此错误:

进程无法访问该文件,因为它正由另一个进程使用

它在文件不存在时有效,但当我再次尝试写入时,错误就会出现。我当时没有访问或使用该文件。

这是代码:

string directory = filepath + "Updates\\" + dir;
if(!Directory.Exists(directory))
{
    Directory.CreateDirectory(directory);
}
remarks = remarks.Trim();
remarks = remarks.Replace("\r\n","<br>");
remarks = remarks.Replace(",","|");
string file = directory + "\\" +  getIndex(barcode) + ".asdt";
StreamWriter writer = new StreamWriter(file,true);
writer.WriteLine(username + "," + barcode + "," + DateTime.Now.ToString("yyyy-MM-dd HH.mm")+ "," + remarks);
writer.Close();

当我检查它时,错误发生在该行:

StreamWriter writer = new StreamWriter(file,true);

这可能是什么原因?

c# streaming ioexception notepad
3个回答
2
投票

您的程序可能没有正确处理文件流,保持文件打开。

使用using声明确保正确处置:

using(StreamWriter writer = new StreamWriter(file,true))
{
    writer.WriteLine(username + "," + barcode + "," + DateTime.Now.ToString("yyyy-MM-dd HH.mm")+ "," + remarks);
    writer.Close();
}

0
投票

或者,您可以在关闭后使writer对象无效。


0
投票

尝试在writer.Flush();之前使用writer.Close();

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