DataObjectItemComparer.Compare Method (String, String, Object, Object)
Compares a property of a data object with another data object property.
Namespace: Microsoft.VisualStudio.Data
Assembly: Microsoft.VisualStudio.Data (in Microsoft.VisualStudio.Data.dll)
Syntax
'Declaración
Public Overridable Function Compare ( _
typeName As String, _
propertyName As String, _
value1 As Object, _
value2 As Object _
) As Integer
public virtual int Compare(
string typeName,
string propertyName,
Object value1,
Object value2
)
public:
virtual int Compare(
String^ typeName,
String^ propertyName,
Object^ value1,
Object^ value2
)
abstract Compare :
typeName:string *
propertyName:string *
value1:Object *
value2:Object -> int
override Compare :
typeName:string *
propertyName:string *
value1:Object *
value2:Object -> int
public function Compare(
typeName : String,
propertyName : String,
value1 : Object,
value2 : Object
) : int
Parameters
- typeName
Type: System.String
The name of an object type.
- propertyName
Type: System.String
The name of a property to compare.
- value1
Type: System.Object
The first value to compare.
- value2
Type: System.Object
The second value to compare.
Return Value
Type: System.Int32
Returns less than zero in cases where the identifier part is less than the specified value. Returns zero if the identifier part is equal to the specified value. Returns greater than zero if the identifier part is greater than the specified value.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | The typeName and/or propertyName parameter is null. |
Remarks
This method should use the same comparison rules as the data source to ensure the correct sorting of objects on the client side.
The base implementation of this method uses the default .NET object comparer (Comparer) when the first value implements IComparable; otherwise it calls the IComparable implementation's override Equals method and returns 1 if this returns false.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.