C＃StreamReader多次读取数据

Question

I have this code:

  using (StreamReader csvreader = new StreamReader(fuFiles.FileContent))
            {
                while (!csvreader.EndOfStream)
                {
                  //reading data
                }
            }

I'm using this in two different functions. In the first function the EndOfStream value is false and the data can be read properly. In the second function this same kind of code says that EndOfStream is true and I'm not able to read data. I'm creating streamreader objects independently.

Edit

I'm adding one more line of explanation, when I'm commenting the first method then I'm able to read the data in the second method.

Is there anything I'm doing wrong?

Answer 1

There are only two constructors for StreamReader that take one parameter. Since "FileContent" is probably not a string, it must be a Stream of some kind. The first time it is read from it is left at the end. Therefore you must either reset it to the beginning (if it allows that), make a copy before reading, or get a new one created.

Answer 2

Based on the variable names in the code you provided, it looks like you're passing the contents of a file to the StreamReader constructor. However, that constructor takes the path to the file to read - not the contents of the file.

You can use the StringReader class to use a stream to read from a string, if that is what you want to do.