load string int text box from txt file ? any one know ? please help

[AceInfinity]

I'm assuming by the title you meant "Load string into text box from text file..."

This is pretty simple, you want this in a textbox, but I see multiple lines here, so i'm assuming multiline is set to true.

Note:

using System.IO;

textBox1.Text = File.ReadAllText("FilePathGoesHere");

Or... just:

textBox1.Text = System.IO.File.ReadAllText("FilePathGoesHere");