Differences between. NET for and foreach

We know that if,else,for,while,switch, variables, etc. are fundamental to the process, and this article is about the difference between for and foreach in. NET:

--The For loop primarily iterates through the data and filters the data that meets the criteria.

--The Foreach loop is primarily a one-time traversal of data.

Note: There are two kinds of circulation methods have good and bad, in different scenes adopt different circulation way, vary from person to person.

Here's a simple example to resolve the differences between the two loops:

The main operating environment is VS2010, with console as an example.

Example of a For loop

Defining a String array

string[] str = new string[]{"A1", "B2", "C3", "D4", "E5"};

Gets the number of array lengths

int length = Str.length;

Iterating through an array

for (int index=0;index<length;index++) {

Search for a string containing the keyword "3"

if (Str[index]. Contains ("3")) {

Console.WriteLine (Str[index]);

}

}

Example of a Foreach loop

Defining a String array

string[] str = new string[]{"A1", "B2", "C3", "D4", "E5"};

Iterating through an array

Foreach (var s in str) {

Console.WriteLine (s);

}

--Obviously the Foreach loop is more concise than the code for the For loop. The LINQ technology in NET3.5, LINQ code to be more concise, interested in. NET beginners sustainable attention to small brother, salute.

This article is from the "12067158" blog, please be sure to keep this source http://12077158.blog.51cto.com/12067158/1885625

Differences between. NET for and foreach