How to get indexed index in C # foreach

In C # development, a Foreach Loop statement is often used instead of a for loop statement. foreach is more concise and efficient than for.

foreach: foreach (var item in arr)         { item ... ..                }For : For (int i = 0; I                 { arr[i] .....                } Obviously the for statement has an index variable directly, and gets the value by index. In practice, however, using foreach sometimes requires an index. to get the index value of a foreach, because there is no direct index value, the easiest solution is to define an index variable outside the foreach statement and then add it to the foreach statement to get the index. For example: int i = 0; foreach (var item in arr)         { i++; item ....         } This is achieved, but the index value can be obtained simply by using the IndexOf function, for example: foreach (var item in arr)         { int index = arr.indexof (item);//index is the index value item ....         } This article is only for the development and growth of the footprints, and provided to the developers in need.

How to get indexed index in C # foreach