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POA better GUI control for a list of text items？
 

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    <p>I have a WinForm application. It needs a list of user defined rules. Inside each rule there will be a list of text items (also entered by the user).</p> <p>Currently I have a grid (SourceGrid). Each row is a rule. In each rule I have a textbox, allowing the user to enter multiple text items (the screen shows example of several regular expressions).</p> <p><img src="https://i.stack.imgur.com/wa5xx.png" alt="Textbox with a list of text items"></p> <p>I have user enter 'tab character' to separate each item. Some rule may have one item and some may have 10s of items. That's why I think it is easier to use only one textbox and allow the user the delimit the items themselves.</p> <p>However now I found that the tab character is quite limiting, because sometimes items are 1 character apart, and sometime more. (in the screenshot it's hard to distinguish the first and second item, just by luck).</p> <p>I was thinking of having the tab character making two items fixed distance apart. No that's no possible. I don't want to use other delimiting characters because it makes the whole thing less readable. I also don't want to code to dynamically create more columns. I was thinking about these IP address boxes for user to enter, but those are not build-in and can't be vary in width.</p> <p>I want to ask if there is a better way to represent this without coding a control from scratch? Or is it possible to have a special wider space character act as the delimiter for the items? Thanks.</p>
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