SpatialEdmFunctions.GeometryMultiPointFromText 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 'GeometryMultiPointFromText' 函式的 DbFunctionExpression。 multiPointWellKnownText 必須具有字串結果型別，而 coordinateSystemId 必須具有整數數值結果型別。 運算式的結果型別為 Edm.Geometry。

public:
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeometryMultiPointFromText(System::Data::Common::CommandTrees::DbExpression ^ multiPointWellKnownText, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);

public static System.Data.Common.CommandTrees.DbFunctionExpression GeometryMultiPointFromText (System.Data.Common.CommandTrees.DbExpression multiPointWellKnownText, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);

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

Public Function GeometryMultiPointFromText (multiPointWellKnownText As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpression

參數

multiPointWellKnownText

DbExpression

提供幾何多點值之已知文字表示的運算式。

coordinateSystemId

DbExpression

運算式，提供幾何多點值座標系統的座標系統 ID (SRID)。

傳回

DbFunctionExpression

根據指定值傳回新幾何多重點值的新 DbFunctionExpression。

例外狀況

ArgumentNullException

multiPointWellKnownText coordinateSystemId

ArgumentException

multiPointWellKnownText coordinateSystemId