SpatialEdmFunctions.GeometryFromText Method
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Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function.
| GeometryFromText(DbExpression) |
Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function with the specified argument, which must have a string result type. The result type of the expression is Edm.Geometry. Its value has the default coordinate system id (SRID) of the underlying provider. |
| GeometryFromText(DbExpression, DbExpression) |
Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function with the specified arguments. |
Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function with the specified argument, which must have a string result type. The result type of the expression is Edm.Geometry. Its value has the default coordinate system id (SRID) of the underlying provider.
public:
static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeometryFromText(System::Data::Common::CommandTrees::DbExpression ^ wellKnownText);public static System.Data.Common.CommandTrees.DbFunctionExpression GeometryFromText(System.Data.Common.CommandTrees.DbExpression wellKnownText);static member GeometryFromText : System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpressionPublic Function GeometryFromText (wellKnownText As DbExpression) As DbFunctionExpressionParameters
- wellKnownText
- DbExpression
An expression that provides the well known text representation of the geometry value.
Returns
A new DbFunctionExpression that returns a new geometry value based on the specified value.
Exceptions
wellKnownText
wellKnownText
Applies to
.NET Framework 4.8.1 и други версии
| Продукт | Версии |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function with the specified arguments. wellKnownText must have a string result type, while coordinateSystemId must have an integer numeric result type. The result type of the expression is Edm.Geometry.
public:
static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeometryFromText(System::Data::Common::CommandTrees::DbExpression ^ wellKnownText, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);public static System.Data.Common.CommandTrees.DbFunctionExpression GeometryFromText(System.Data.Common.CommandTrees.DbExpression wellKnownText, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);static member GeometryFromText : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpressionPublic Function GeometryFromText (wellKnownText As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpressionParameters
- wellKnownText
- DbExpression
An expression that provides the well known text representation of the geometry value.
- coordinateSystemId
- DbExpression
An expression that provides the coordinate system id (SRID) of the geometry value's coordinate system.
Returns
A new DbFunctionExpression that returns a new geometry value based on the specified values.
Exceptions
wellKnownText
coordinateSystemId
wellKnownText
coordinateSystemId
Applies to
.NET Framework 4.8.1 и други версии
| Продукт | Версии |
|---|---|
| .NET Framework | 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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