共用方式為

SpatialEdmFunctions.GeographyMultiPolygonFromBinary 方法

  • 參考

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 'GeographyMultiPolygonFromBinary' 函式的 DbFunctionExpression。 multiPolygonWellKnownBinaryValue 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 ^ GeographyMultiPolygonFromBinary(System::Data::Common::CommandTrees::DbExpression ^ multiPolygonWellKnownBinaryValue, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);
public static System.Data.Common.CommandTrees.DbFunctionExpression GeographyMultiPolygonFromBinary (System.Data.Common.CommandTrees.DbExpression multiPolygonWellKnownBinaryValue, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);
static member GeographyMultiPolygonFromBinary : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression
Public Function GeographyMultiPolygonFromBinary (multiPolygonWellKnownBinaryValue As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpression

參數

multiPolygonWellKnownBinaryValue
DbExpression

提供地理多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多邊形值的新 DbFunctionExpression。

例外狀況

ArgumentNullException

multiPolygonWellKnownBinaryValue coordinateSystemId

ArgumentException

multiPolygonWellKnownBinaryValue coordinateSystemId

適用於