How to Extract a Substring Between Two Delimiters in C#?

Extract substrings between delimiters from a string

Suppose there is a string, such as "super example of string key : text I want to keep - end of my string", we need to extract the substring between "key : " and " -". Regular expressions are one possible solution, but there are other ways.

One way is to use a combination of IndexOf and Substring methods to extract substrings. The starting position (pFrom) is determined by finding the index of "key: " and adding its length. End position (pTo) Calculates the length of the substring by finding the last occurrence of "-" and subtracting it from pFrom.

Using this approach, the following code snippet demonstrates how to separate the desired substring:

string St = "super exemple of string key : text I want to keep - end of my string";

int pFrom = St.IndexOf("key : ") + "key : ".Length;
int pTo = St.LastIndexOf(" - ");

string result = St.Substring(pFrom, pTo - pFrom);

Executing this code will get the desired substring "text I want to keep".

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