SqlGeography.InstanceOf 方法
Tests if the SqlGeography instance is the same as the specified type.
命名空間： Microsoft.SqlServer.Types
組件： Microsoft.SqlServer.Types (在 Microsoft.SqlServer.Types.dll 中)
語法
'宣告
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := True)> _
Public Function InstanceOf ( _
geometryType As String _
) As SqlBoolean
'用途
Dim instance As SqlGeography
Dim geometryType As String
Dim returnValue As SqlBoolean
returnValue = instance.InstanceOf(geometryType)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public SqlBoolean InstanceOf(
string geometryType
)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public:
SqlBoolean InstanceOf(
String^ geometryType
)
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)>]
member InstanceOf :
geometryType:string -> SqlBoolean
public function InstanceOf(
geometryType : String
) : SqlBoolean
參數
- geometryType
型別：System.String
A string that specifies one of the 12 types exposed in the geography type hierarchy.
傳回值
型別：System.Data.SqlTypes.SqlBoolean
A SqlBoolean value that indicates whether the SqlGeography instance is the same as the specified geometry type.Returns true if the type of a geography instance is the same as the specified type, or if the specified type is an ancestor of the instance type; otherwise, returns false.
備註
The input for the method must be one of the following: T:Microsoft.SqlServer.Types.SqlGeometry, Point, Curve, LineString, Surface, Polygon, GeometryCollection, MultiSurface, MultiPolygon, MultiCurve, MultiLineString, and MultiPoint.
This method throws an ArgumentException if any other strings are used for the input.