AutoGeneratedField(String) Konstruktor

Definisi

Ruang nama:

System.Web.UI.WebControls

Rakitan:

System.Web.dll

Menginisialisasi instans AutoGeneratedField baru kelas dengan bidang data yang ditentukan.

public:
 AutoGeneratedField(System::String ^ dataField);

public AutoGeneratedField (string dataField);

new System.Web.UI.WebControls.AutoGeneratedField : string -> System.Web.UI.WebControls.AutoGeneratedField

Public Sub New (dataField As String)

Parameter

dataField

String

Nama bidang data yang akan diikat ke AutoGeneratedField.

Contoh

Contoh berikut menunjukkan cara menggunakan konstruktor ini untuk membuat instans AutoGeneratedField baru kelas saat menerapkan kontrol kustom yang berasal dari DetailsView kontrol.

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

Keterangan

Gunakan konstruktor ini untuk menginisialisasi instans AutoGeneratedField baru kelas. Konstruktor ini umumnya digunakan oleh kontrol terikat data (seperti GridView dan DetailsView) saat membuat bidang yang dihasilkan secara otomatis.

Lihat juga

• DetailsView
• GridView
• DataField