C # Whether an array contains a value summary

Summarize n methods, to be supplemented and perfected

First, Array.indexof

int id = array.indexof (string[], "value to find");
if (id!=-1)

or written

if (Array.indexof (string[], "value to find") >= 0)

Second, IList

(IList)string[]). Contains"value to look for")

Third, array.exists

if (array.exists (setselectids, Element = = element. Equals (ID)))

Iv. Pending additions

Reference:

How to determine whether an array has a value in C # whether a string is in another string array array.exists usage array.indexof usage

C # Whether an array contains a value summary