通过

InstanceOf 方法

Tests if the SqlGeometry instance is the same as the specified type.

命名空间：  Microsoft.SqlServer.Types
程序集：  Microsoft.SqlServer.Types（在 Microsoft.SqlServer.Types.dll 中）

语法

声明
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := True)> _
Public Function InstanceOf ( _
    geometryType As String _
) As SqlBoolean
用法
Dim instance As SqlGeometry
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

参数

返回值

类型：System.Data.SqlTypes. . :: . .SqlBoolean
A SqlBoolean value indicating if the calling SqlGeometry is of the specified geometry type. Returns true if the type of a SqlGeometry instance is the same as the specified type, or if the specified type is an ancestor of the instance type. Otherwise, returns false.

注释

The input for the method must be one of the following: Geometry, 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.