STPointFromText 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.
命名空间: Microsoft.SqlServer.Types
程序集: Microsoft.SqlServer.Types(在 Microsoft.SqlServer.Types.dll 中)
语法
声明
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := False)> _
Public Shared Function STPointFromText ( _
pointTaggedText As SqlChars, _
srid As Integer _
) As SqlGeography
用法
Dim pointTaggedText As SqlChars
Dim srid As Integer
Dim returnValue As SqlGeography
returnValue = SqlGeography.STPointFromText(pointTaggedText, _
srid)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public static SqlGeography STPointFromText(
SqlChars pointTaggedText,
int srid
)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public:
static SqlGeography^ STPointFromText(
SqlChars^ pointTaggedText,
int srid
)
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)>]
static member STPointFromText :
pointTaggedText:SqlChars *
srid:int -> SqlGeography
public static function STPointFromText(
pointTaggedText : SqlChars,
srid : int
) : SqlGeography
参数
- pointTaggedText
类型:System.Data.SqlTypes. . :: . .SqlChars
The WKT representation of the SqlGeography Point instance you wish to return.
- srid
类型:System. . :: . .Int32
An int expression that represents the Spatial Reference ID (SRID) of the SqlGeography Point instance you wish to return.
返回值
类型:Microsoft.SqlServer.Types. . :: . .SqlGeography
A SqlGeography value constructed from the specified WKT representation.
注释
This method throws a FormatException if the input is not well-formatted.