Append mode in write operation

  • Thread starter Thread starter Curious
  • Start date Start date
C

Curious

I want to write to an output file, "C:\\temp\\debug.txt": If the file
exists, append the new content to the end of the file (instead of
overwriting the current content).

Therefore, I want to code this like below:


FileInfo lFile = new FileInfo("C:\\temp\\debug.txt");


if (lFile.Exists)
{

FileStream lStream =
lFile.Open(FileMode.OpenOrCreate, FileAccess.Write, FileShare.Read);


}

However, it doesn't work because It overwrites the existing content. I
believe the append mode is defined with different parameters from the
ones I use. What are the correct parameters to define the "append"
type of write mode?

Thanks!
 
Curious said:
I want to write to an output file, "C:\\temp\\debug.txt": If the file
exists, append the new content to the end of the file (instead of
overwriting the current content).

Therefore, I want to code this like below:


FileInfo lFile = new FileInfo("C:\\temp\\debug.txt");


if (lFile.Exists)
{

FileStream lStream =
lFile.Open(FileMode.OpenOrCreate, FileAccess.Write, FileShare.Read);


}

However, it doesn't work because It overwrites the existing content. I
believe the append mode is defined with different parameters from the
ones I use. What are the correct parameters to define the "append"
type of write mode?

Thanks!
Click to expand...

Use FileMode.Append. You don't have to check if the file exists, if it
doesn't exist it will be created.
 
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