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Editorial Team
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Asked: 2026-05-27T10:18:43+00:00

If I have a string like: SMITH 10-12 4-11H2 And I want to modify

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If I have a string like:

"SMITH 10-12 4-11H2"

And I want to modify this string to have a # after the first dash AND the following space to be like:

"SMITH 10-12 #4-11H2"

What is the best way to do this using C#?

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1 Answer

  1. Editorial Team

    Without any checks it could look like this:

    int pos1 = text.IndexOf('-');    
int pos2 = text.IndexOf(' ', pos1);    
string result = text.Insert(pos2+1, "#");
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