SqlGeography.STGeomFromText 方法
Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation augmented with any Z (elevation) and M (measure) values carried by the instance.
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 := False)> _
Public Shared Function STGeomFromText ( _
geometryTaggedText As SqlChars, _
srid As Integer _
) As SqlGeography
'用途
Dim geometryTaggedText As SqlChars
Dim srid As Integer
Dim returnValue As SqlGeography
returnValue = SqlGeography.STGeomFromText(geometryTaggedText, _
srid)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public static SqlGeography STGeomFromText(
SqlChars geometryTaggedText,
int srid
)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public:
static SqlGeography^ STGeomFromText(
SqlChars^ geometryTaggedText,
int srid
)
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)>]
static member STGeomFromText :
geometryTaggedText:SqlChars *
srid:int -> SqlGeography
public static function STGeomFromText(
geometryTaggedText : SqlChars,
srid : int
) : SqlGeography
參數
- geometryTaggedText
型別：System.Data.SqlTypes.SqlChars
The WKT representation of the SqlGeography instance you wish to return.
- srid
型別：System.Int32
An int expression that represents the spatial reference ID (SRID) of the SqlGeography instance you wish to return.
傳回值
型別：Microsoft.SqlServer.Types.SqlGeography
A SqlGeography instance constructed from the WKY representation.
備註
The OGC type of the SqlGeography instance returned by STGeomFromText is set to the corresponding WKT input.
This method will throw a FormatException if the input is not well-formatted.