How to write the text in Textbox into a. txt file with C#?

Import the system. Image orthographic tube

Button click event:

Private void button 1_Click (object sender, EventArgs e)

{

filestream fs = new filestream(@ " c:/documents and settings/user/desktop/t . txt "，FileMode。 Create);

StreamWriter sw = new streamwriter (fs);

Southwest. Write (textBox 1. Text);

Southwest. close()；

fs。 close()；

}