SpatialEdmFunctions.GeographyPolygonFromBinary 方法

定義

命名空間:

System.Data.Common.CommandTrees.ExpressionBuilder.Spatial

組件:

System.Data.Entity.dll

建立一個使用指定引數叫用標準 'GeographyPolygonFromBinary' 函式的 DbFunctionExpression。 polygonWellKnownBinaryValue 必須具有二進位結果型別，而 coordinateSystemId 必須具有整數數值結果型別。 運算式的結果型別為 Edm.Geography。

public:
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeographyPolygonFromBinary(System::Data::Common::CommandTrees::DbExpression ^ polygonWellKnownBinaryValue, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);

public static System.Data.Common.CommandTrees.DbFunctionExpression GeographyPolygonFromBinary (System.Data.Common.CommandTrees.DbExpression polygonWellKnownBinaryValue, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);

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

Public Function GeographyPolygonFromBinary (polygonWellKnownBinaryValue As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpression

參數

polygonWellKnownBinaryValue

DbExpression

提供地理多邊形值之已知二進位表示的運算式。

coordinateSystemId

DbExpression

運算式，提供地理多邊形值座標系統的座標系統 ID (SRID)。

傳回

DbFunctionExpression

根據指定值傳回新地理多邊形值的新 DbFunctionExpression。

例外狀況

ArgumentNullException

polygonWellKnownBinaryValue coordinateSystemId

ArgumentException

polygonWellKnownBinaryValue coordinateSystemId