value (C# Reference)

The contextual keyword value is used in the set accessor in ordinary property declarations. It is similar to an input parameter on a method. The word value references the value that client code is attempting to assign to the property. In the following example, MyDerivedClass has a property called Name that uses the value parameter to assign a new string to the backing field name. From the point of view of client code, the operation is written as a simple assignment.

class MyBaseClass
{
 // virtual auto-implemented property. Overrides can only
 // provide specialized behavior if they implement get and set accessors.
 public virtual string Name { get; set; }
 // ordinary virtual property with backing field
 private int num;
 public virtual int Number
 {
 get { return num; }
 set { num = value; }
 }
}
class MyDerivedClass : MyBaseClass
{
 private string name;
 // Override auto-implemented property with ordinary property
 // to provide specialized accessor behavior.
 public override string Name
 {
 get
 {
 return name;
 }
 set
 {
 if (value != String.Empty)
 {
 name = value;
 }
 else
 {
 name = "Unknown";
 }
 }
 }
}

For more information about the use of value, see Properties (C# Programming Guide).

C# Language Specification

For more information, see the C# Language Specification. The language specification is the definitive source for C# syntax and usage.

See Also

Reference

C# Keywords

Concepts

C# Programming Guide

Other Resources

C# Reference