C #: Attributes

Public String someproperty

{

// Get accessors do not contain parameters and must return the type of attribute Declaration

Get

{

Return "this is the property value ";

}

// The set accessors do not contain any display parameters, but the compiler assumes that the Set accessors contain a parameter, which is of the same type as the attribute and is expressed as value.

Set

{

// Do whatever needs to be done to set the property

}

}

 

Privatestring forename;

Publicstring forename

{

Get

{

Return forename;

}

Set

{

If (value. length> 20)

{

// Throw an exception

}

Else

{

Forename = value;

}

}

}

1. Read-only attribute: The set accessors are omitted in the attribute definition; write-only attributes: The get accessors are omitted in the attribute definition (this is a bad programming method)

2. Attribute access modifier:

Pay attention to the following points during use:

• When defining an attribute, the outer layer must have an access level modifier (Public string name)
• When defining the get and set access levels, you can only set one of them separately (the get permission in the following example is the outer permission by default)
• Permissions on the outer layer must be looser than those on the inner layer.

Private string _ name;

Public string name

{

Get

{

Return _ name;

}

Privateset

{

_ Name = value;

}

}

3. automatically implemented attributes: there must be two accessors. You cannot set this attribute to read-only or write-only attributes.

Public String forename {Get; set ;}

Public String forename {Get; privateset ;}