what is name this the operation in c#

Question

using(){}

Answer 1

Please give some more information. What do you want to know ?

Answer 2

Using defines the scope that the object between () is available.

This is usefull with big objects that require a lot of memory or objects that have connections with other resources (files / databases) and you want to make sure it is disposed properly.

So MD5CryptoServiceProvider is created, can be used between the {} and is disposed

The reason for the "using" statement is to ensure that the object is disposed as soon as it goes out of scope
https://stackoverflow.com/questions/75401/uses-of-using-in-c-sharp

Answer 3

look
static string En (string value )
{
using (MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider())
{
UTF8Encoding ut = new UTF8Encoding();
byte[] data = md5.ComputeHash(ut.GetBytes(value));
return Convert.ToBase64String(data);
}

}
what is the using (){ }