IEqualityComparer.GetHashCode Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Returns a hash code for the specified object.
Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Function GetHashCode ( _
obj As Object _
) As Integer
int GetHashCode(
Object obj
)
Parameters
- obj
Type: System.Object
The Object for which a hash code is to be returned.
Return Value
Type: System.Int32
A hash code for the specified object.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | The type of obj is a reference type and obj is nulla null reference (Nothing in Visual Basic). |
Remarks
Implement this method to provide customized hash codes for objects,corresponding to the customized equality comparison provided by the Equals method.
Notes to Implementers
Implementations are required to ensure that if the Equals method returns true for two objects x and y, then the value returned by the GetHashCode method for x must equal the value returned for y.
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.