Expression.Type 屬性

定義

命名空間:

System.Linq.Expressions

組件:

System.Linq.Expressions.dll

來源:

Expression.cs

取得此 Expression 代表之運算式的靜態類型。

public:
 virtual property Type ^ Type { Type ^ get(); };

public virtual Type Type { get; }

member this.Type : Type

Public Overridable ReadOnly Property Type As Type

屬性值

Type

代表運算式靜態類型的 Type。

備註

NodeType是表達式樹狀節點的類型，而 Type 表示靜態 Common Language Runtime (CLR) 節點所代表的運算式類型。 例如，具有不同節點類型的兩個節點可以有相同的 Type，如下列程式代碼範例所示。

// Add the following directive to your file:
// using System.Linq.Expressions;

ConstantExpression constExpr = Expression.Constant(5);
Console.WriteLine("NodeType: " + constExpr.NodeType);
Console.WriteLine("Type: " + constExpr.Type);

BinaryExpression binExpr = Expression.Add(constExpr, constExpr);
Console.WriteLine("NodeType: " + binExpr.NodeType);
Console.WriteLine("Type: " + binExpr.Type);

// This code example produces the following output:
//
// NodeType: Constant
// Type: System.Int32
// NodeType: Add
// Type: System.Int32

' Add the following directive to your file:
' Imports System.Linq.Expressions  

Dim constExpr As ConstantExpression = Expression.Constant(5)
Console.WriteLine("NodeType: " & constExpr.NodeType.ToString())
Console.WriteLine("Type: " & constExpr.Type.ToString())

Dim binExpr As BinaryExpression = Expression.Add(constExpr, constExpr)
Console.WriteLine("NodeType: " & binExpr.NodeType.ToString())
Console.WriteLine("Type: " & binExpr.Type.ToString())

' This code example produces the following output:
'
' NodeType: Constant
' Type: System.Int32
' NodeType: Add
' Type: System.Int32