Removing everything after a character, including that character in C#

December 10, 2021

I have the following string in C#,

my-new-field.js?role=admin

I want to remove everything after ? and then ? as well so that the resultant string would be my-new-field.js

My string may not contain ? every time so I need to check if the ? is present in the string or not and then only need to remove ? and everything after ?.

How should I do that?

>Solution :

Fiddle: https://dotnetfiddle.net/42kjwW

    string test = "my-new-field.js?role=admin";
    int position = test.IndexOf("?");
    if(position >= 0) {
         test = test.Substring(0,position);
    }

So, substring will "cut" the string from the position 0 (very begining) to the first position of character ?