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 . LINQ in NET3.5 , the code you write is more concise and interesting. NET beginner pays tribute to the little brother.

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Differences between. NET for and foreach