Help obtaining a string in a textbox

leosco

Hi.
For my project, I need to get all strings in a textbox which start with ! (define). For example:

!something = $10
!somethingelse = $14

Now my idea was to save the file every time the text is changed (might be slow though..) and read each line one by one in that file and use the IndexOf method to check if the lines contains a '!'. If it does then it will store that define somewhere. The problem is this is that I get the whole line (!something = $10) when I just want the !something part.

Can someone tell me how I would do this? I thought of trimming all characters after a space (because each define has a space after it) but I don't know how to do that. Help would be appreciated.

Alternatively, if someone has a better way of doing this, then please let me know.

Thanks in advance.

3 Replies

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Sam Hobbs16y ago
Accepted answer
You can use the TextBoxLineCount Property to determine how many lines there are and the TextBox.GetLineText Method to get each line. Then you can use String.IndexOf Method to find the first space and then String.Substring Method to get the string.
Sam Hobbs16y ago
Certainly there are many alternatives. One is to use the StringReader class; get the entire contents of the control all at once and put it into a StringReader instance and then use the StringReader.ReadLine Method.
leosco16y ago
Thank you for your advice - it's much better than what I was doing. However, is there any other method of processing each line other than GetLineText? The reason is that am using a custom control which does not contain this method.