Open a file and display in textbox

[cmrhema]

hello
I need to load a file and display the contents in a textbox.
I am using asp.net and Visual C# 2005

I tried out this coding

string filename = (@"c:\download.txt");
        Response.Clear();
        
        Response.Flush();
        Response.WriteFile(filename);

but this will help me in writing the file in the page(screen)

I want the file contents to be displayed in the text box

Kindly help
Thanks