Essentially what I am trying to do is filter an input and store only a specific set of characters from a textbox in a variable to use for a comparison. For example, if the user enters in a code like 'C1TEST' into the text box, I am looking for a way to take that string and store the prefix 'C1' in a variable. If the user entered 'USTEST' I would want the value 'US' stored in that variable. Currently I only need the first two characters of the string, nothing more, nothing less.

Any and all advice on this issue would be greatly appreciated.

CodePudding user response：

Use substring function...

Dim First2Char As String = tbObservacoes.Text.Substring(0, 2) ' (starting index, length)
MsgBox(First2Char)

Using the way I showed above, you will get 2 characters starting from position 0.