c# read value from file and ignore everything except for value

Question

I have a program that I need to have a config file with value to be displayed in my program. Inside my text file I have Wireless = 1 & Cradle = 2.

In my program I will have a label populate the release number only and not the other characters.

Answer 1

private string searchFile(String path, String searchText)
{
      string regex=@"(?i)(?<="+searchText+@"\s*=\s*)\d+";
      return Regex.Match(File.ReadAllText(path),regex).Value;//version number
}

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This is what I tried and it gives the correct output

string s="Wireless = 1 Cradle = 2";
Regex.Match(s,@"(?i)(?<=Wireless\s*=\s*)\d+").Value;//1