DataContext.Log 屬性

定義

命名空間:
System.Data.Linq
組件:
System.Data.Linq.dll

取得或設定寫入 SQL 查詢或指令的目的地。

public:
 property System::IO::TextWriter ^ Log { System::IO::TextWriter ^ get(); void set(System::IO::TextWriter ^ value); };
public System.IO.TextWriter Log { get; set; }
member this.Log : System.IO.TextWriter with get, set
Public Property Log As TextWriter

屬性值

TextWriter

用來撰寫指令的作者。

範例

以下範例在主控台視窗顯示產生的 SQL 後，才顯示查詢結果。

db.Log = Console.Out;
var custQuery =
    from cust in db.Customers
    where cust.City == "London"
    select cust;

foreach (var custObj in custQuery)
{
    Console.WriteLine(custObj.ContactName);
}

db.Log = Console.Out
Dim custQuery = _
From cust In db.Customers _
Where cust.City = "London" _
Select cust

For Each custObj In custQuery
    Console.WriteLine(custObj.ContactName)
Next

備註

將此屬性設為 null 停用指令記錄。

適用於