VB-Catching first 4 characters in textbox

Question

I am currently working on a really basic scripting langauge (called EngineScript) that gets the first 4 letters of a textbox's content (in a Windows Form project) and compares it to a in-program list of keywords and then uses the remaining characters to form an argument to the keywords... I was wondering weather you had some code ideas on how to go about placing the first 4 letters in one variable and then the remaining characters into another. My langauge will be single command.. i.e you will only be able to run one command per program.

Answer 1

String.Substring() should work:

Dim first4Chars = TextBox1.Text.Substring(0, 4)
Dim restOfChars = TextBox1.Text.Substring(4)