Generating incremental file name

Following code could help you in getting Incremental or Unique file name.

If file abc.txt already exist than following function will return abc1.txt, if abc1.txt exists than abc2.txt and so on.

public static string GetIncrementalFilename(string FileName)
{
int count = 0;
string Name = "";

if (System.IO.File.Exists(FileName))
{
System.IO.FileInfo f = new System.IO.FileInfo(FileName);
if (!string.IsNullOrEmpty(f.Extension))
{
Name = f.FullName.Substring(0, f.FullName.LastIndexOf('.'));
}
else
{
Name = f.FullName;
}

while (File.Exists(FileName))
{
count++;
FileName = Name + count.ToString() + f.Extension;
}
}
return FileName;
}