SpatialEdmFunctions.GeographyPointFromBinary Metode

Definisi

Ruang nama:

System.Data.Common.CommandTrees.ExpressionBuilder.Spatial

Rakitan:

System.Data.Entity.dll

DbFunctionExpression Membuat yang memanggil fungsi 'GeographyPointFromBinary' kanonis dengan argumen yang ditentukan. pointWellKnownBinaryValue harus memiliki tipe hasil biner, sementara coordinateSystemId harus memiliki tipe hasil numerik bilangan bulat. Jenis hasil ekspresi adalah Edm.Geography.

public:
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeographyPointFromBinary(System::Data::Common::CommandTrees::DbExpression ^ pointWellKnownBinaryValue, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);

public static System.Data.Common.CommandTrees.DbFunctionExpression GeographyPointFromBinary (System.Data.Common.CommandTrees.DbExpression pointWellKnownBinaryValue, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);

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

Public Function GeographyPointFromBinary (pointWellKnownBinaryValue As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpression

Parameter

pointWellKnownBinaryValue

DbExpression

Ekspresi yang menyediakan representasi biner terkenal dari nilai titik geografi.

coordinateSystemId

DbExpression

Ekspresi yang menyediakan id sistem koordinat (SRID) dari systempoint koordinat nilai titik geografiWellKnownBinaryValue.

Mengembalikan

DbFunctionExpression

DbFunctionExpression baru yang mengembalikan nilai titik geografi baru berdasarkan nilai yang ditentukan.

Pengecualian

ArgumentNullException

pointWellKnownBinaryValue coordinateSystemId

ArgumentException

pointWellKnownBinaryValue coordinateSystemId