Getting the index of a particular item in array

Question

I want to retrieve the index of an array but I know only a part of the actual value in the array  For example  I am storing an author name in the array dynamically say  quot author    xyz  quot    Now I want to find the index of the array item containing it  since I don t know the value part  How to do this

User · Answer

int i   Array IndexOf temp1   temp1 Where x  gt x Contains  abc    FirstOrDefault

User · Answer

You can use FindIndex   var index   Array FindIndex myArray  row   gt  row Author     xyz      Edit  I see you have an array of string  you can use any code to match  here an example with a simple contains    var index   Array FindIndex myArray  row   gt  row Contains  Author  xyz        Maybe you need to match using a regular expression

User · Answer

try Array FindIndex myArray  x   gt  x Contains  author

User · Answer

The previous answers will only work if you know the exact value you are searching for - the question states that only a partial value is known   Array FindIndex authors  author   gt  author Contains  xyz       This will return the index of the first item containing  xyz

User · Answer

FindIndex Extension  static class ArrayExtensions       public static int FindIndex lt T gt  this T   array  Predicate lt T gt  match                return Array FindIndex array  match             Usage  int   array     9 8 7 6 5     var index   array FindIndex i   gt  i    7    Console WriteLine index      Prints  2    Here s a fiddle with it     Bonus  IndexOf Extension  I wrote this first not reading the question properly     static class ArrayExtensions       public static int IndexOf lt T gt  this T   array  T value                return Array IndexOf array  value                Usage  int   array     9 8 7 6 5     var index   array IndexOf 7    Console WriteLine index      Prints  2    Here s a fiddle with it

[c#] Getting the index of a particular item in array

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