共用方式為

SpatialEdmFunctions.GeographyPointFromText(DbExpression, DbExpression) 方法

  • 參考

定義

命名空間:
System.Data.Common.CommandTrees.ExpressionBuilder.Spatial
組件:
System.Data.Entity.dll

建立會使用指定的引數叫用標準 'GeographyPointFromText' 函式的 DbFunctionExpression。

public:
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeographyPointFromText(System::Data::Common::CommandTrees::DbExpression ^ pointWellKnownText, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);
public static System.Data.Common.CommandTrees.DbFunctionExpression GeographyPointFromText (System.Data.Common.CommandTrees.DbExpression pointWellKnownText, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);
static member GeographyPointFromText : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression
Public Function GeographyPointFromText (pointWellKnownText As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpression

參數

pointWellKnownText
DbExpression

提供地理點值之已知文字表示的運算式。

coordinateSystemId
DbExpression

運算式，提供地理點值座標系統 pointWellKnownTextValue 的座標系統 ID (SRID)。

傳回

DbFunctionExpression

標準的 'GeographyPointFromText' 函式。

適用於