How to download file in C#.Net?

In this article we will discuss about how to download a file in C#.Net. There are different approaches to download file in C#.Net.

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string fileName = @"E:\Filename.txt";

1st Approach:
Response.Clear();
Response.ContentType = "application/octet-stream";// "application/ms-word";
Response.AddHeader("Content-Disposition", "attachment;filename=abc.txt);
Response.WriteFile(fileName);
Response.Flush();
Response.Close();

2nd Approach:
Response.Clear();
Response.ContentType = "application/octet-stream";// "application/ms-word";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + tempFile);
Response.TransmitFile(fileName);
Response.Flush();
Response.Close();

3rd Approach:
Response.Buffer = true;
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + strFileName);
Response.WriteFile(strFilePath);
Response.Flush();
Response.End();