Differences between reference parameter ref and output parameter out in C #

Record the differences between the reference type and the output type parameters in C # today. The following describes the differences.

Ref (reference parameter) transmits data to the method through the memory address of the actual value, so the change to it will affect its actual memory address.

Out (output parameters) is the same as ref and does not open up new memory addresses. However, one feature of output parameters is that they do not need to be initialized when calling methods and must be initialized before returning them.

Example:

Class test

{

Public string outTest (string p, out path)

{

Response. write (p );

Path = "test ";

}

Static void main ()

{

String strPath;

String strp;

OutTest (strp, out strpath)

Response. write (strpath );

}

}

Now you can understand.

Now you can understand.