AutoGeneratedField(String) 建構函式
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
使用指定的資料欄位，初始化 AutoGeneratedField 類別的新執行個體。
public:
AutoGeneratedField(System::String ^ dataField);public AutoGeneratedField (string dataField);new System.Web.UI.WebControls.AutoGeneratedField : string -> System.Web.UI.WebControls.AutoGeneratedFieldPublic Sub New (dataField As String)參數
- dataField
- String
要繫結至 AutoGeneratedField 的資料欄位名稱。
範例
下列範例示範如何在實作衍生自 DetailsView 控制項的 AutoGeneratedField 自訂控制項時，使用此建構函式來建立 類別的新實例。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Permissions;
using System.Web;
namespace Samples.AspNet.CS.Controls
{
[AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class SimpleCustomControl : DetailsView
{
protected override AutoGeneratedField CreateAutoGeneratedRow(AutoGeneratedFieldProperties fieldProperties)
{
// Create an AutoGeneratedField object.
AutoGeneratedField field = new AutoGeneratedField(fieldProperties.DataField);
// Set the properties of the AutoGeneratedField using
// the values from the AutoGeneratedFieldProperties
// object contained in the fieldProperties parameter.
((IStateManager)field).TrackViewState();
field.HeaderText = fieldProperties.Name;
field.SortExpression = fieldProperties.Name;
field.ReadOnly = fieldProperties.IsReadOnly;
field.DataType = fieldProperties.Type;
return field;
}
}
}
Imports System.ComponentModel
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Security.Permissions
Imports System.Web
Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal), AspNetHostingPermission(SecurityAction.InheritanceDemand, Level:=AspNetHostingPermissionLevel.Minimal)> Public Class SimpleCustomControl
Inherits System.Web.UI.WebControls.DetailsView
Protected Overrides Function CreateAutoGeneratedRow(ByVal fieldProperties As AutoGeneratedFieldProperties) As AutoGeneratedField
' Create an AutoGeneratedField object.
Dim field As New AutoGeneratedField(fieldProperties.DataField)
' Set the properties of the AutoGeneratedField using
' the values from the AutoGeneratedFieldProperties
' object contained in the fieldProperties parameter.
CType(field, IStateManager).TrackViewState()
field.HeaderText = fieldProperties.Name
field.SortExpression = fieldProperties.Name
field.ReadOnly = fieldProperties.IsReadOnly
field.DataType = fieldProperties.Type
Return field
End Function
End Class
End Namespace
備註
使用此建構函式來初始化 類別的新實例 AutoGeneratedField 。 此建構函式通常由資料繫結控制項使用 (，例如 GridView 和 DetailsView) 在建立自動產生的欄位時。
