SpatialEdmFunctions.GeometryMultiPolygonFromText Metode

Definisi

Ruang nama:

System.Data.Common.CommandTrees.ExpressionBuilder.Spatial

Rakitan:

System.Data.Entity.dll

DbFunctionExpression Membuat yang memanggil fungsi kanonis 'GeometryMultiPolygonFromText' dengan argumen yang ditentukan. multiPolygonWellKnownText harus memiliki tipe hasil string, sementara coordinateSystemId harus memiliki tipe hasil numerik bilangan bulat. Jenis hasil ekspresi adalah Edm.Geometry.

public:
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeometryMultiPolygonFromText(System::Data::Common::CommandTrees::DbExpression ^ multiPolygonWellKnownText, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);

public static System.Data.Common.CommandTrees.DbFunctionExpression GeometryMultiPolygonFromText (System.Data.Common.CommandTrees.DbExpression multiPolygonWellKnownText, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);

static member GeometryMultiPolygonFromText : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression

Public Function GeometryMultiPolygonFromText (multiPolygonWellKnownText As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpression

Parameter

multiPolygonWellKnownText

DbExpression

Ekspresi yang menyediakan representasi teks terkenal dari nilai multi-poligon geometri.

coordinateSystemId

DbExpression

Ekspresi yang menyediakan id sistem koordinat (SRID) dari sistem koordinat nilai geometri multi-poligon.

Mengembalikan

DbFunctionExpression

DbFunctionExpression baru yang mengembalikan nilai multi-poligon geometri baru berdasarkan nilai yang ditentukan.

Pengecualian

ArgumentNullException

multiPolygonWellKnownText coordinateSystemId

ArgumentException

multiPolygonWellKnownText coordinateSystemId