Question: how to check if file exist in asp.net c#?
Answer: string fileName = @ "c:\temp\Mahesh.txt";
if (File.Exists(fileName))
Console.WriteLine("File exists." );
else.
Console. ... 
After that check whether the file exists in a directory or not.
if(File.Exists(@ "D:\myfile.txt")) {
Console.WriteLine("The file exists."