Here’s a way to return a substring of string that is between 2 strings in C#. There are other options for doing this, such as RegEx, but this is clean and simple.

// This search returns the substring between two strings, so 
// the first index is moved to the character just after the first string.
int first = str.IndexOf("$string1$") + "$string1$".Length;
int last = str.LastIndexOf("$string2$");
string str2 = str.Substring(first, last - first);

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