[Solved] C# Regular expression: how to get one of two texts with condition?

by


You can capture each value and use the MatchEvaluator to process the groups.

string inputString = "[sex:he|she] took the dog with [sex:him|her]";
string result = Regex.Replace(inputString, @"\[(?<name>[^:]+):(?<value1>[^\|]+)\|(?<value2>[^\]]+)\]", Evaluator);

And the evaluator could replace any group with the appropriate response:

private string Evaluator(Match match)
{
    if (match.Groups["name"].Value == "sex")
    {
        if (m_IsMale)
        {
            return match.Groups["value1"].Value;
        }
        else
        {
            return match.Groups["value2"].Value;
        }
    }
    // No replacement, return the original value.
    return match.Value;
}

The above results in either

he took the dog with him

or

she took the dog with her

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solved C# Regular expression: how to get one of two texts with condition?