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 "author = 'xyz'".
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?
You can use FindIndex
var index = Array.FindIndex(myArray, row => 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 => row.Contains("Author='xyz'"));
Maybe you need to match using a regular expression?
try Array.FindIndex(myArray, x => x.Contains("author"));
int i= Array.IndexOf(temp1, temp1.Where(x=>x.Contains("abc")).FirstOrDefault());
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 => author.Contains("xyz"));
This will return the index of the first item containing "xyz".
static class ArrayExtensions
{
public static int FindIndex<T>(this T[] array, Predicate<T> match)
{
return Array.FindIndex(array, match);
}
}
Usage
int[] array = { 9,8,7,6,5 };
var index = array.FindIndex(i => i == 7);
Console.WriteLine(index); // Prints "2"
I wrote this first not reading the question properly...
static class ArrayExtensions
{
public static int IndexOf<T>(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"
You can use Array.IndexOf() method.
var index = Array.IndexOf(myArray,valueToFind);
Arrayorstring []?