Writing file to web server - ASP.NET

Question

I simply want to write the contents of a TextBox control to a file in the root of the web server directory... how do I specify it?

Bear in mind, I\'m testing this lo

Answer 1

protected void TestSubmit_ServerClick(object sender, EventArgs e)
{
  using (StreamWriter _testData = new StreamWriter(Server.MapPath("~/data.txt"), true))
 {
  _testData.WriteLine(TextBox1.Text); // Write the file.
 }         
}

Server.MapPath takes a virtual path and returns an absolute one. "~" is used to resolve to the application root.