Επεξεργασία

Κοινή χρήση μέσω

AutoGeneratedFieldProperties.DataField Property

  • Reference

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Gets or sets the name of the field bound to the AutoGeneratedField object.

public:
 property System::String ^ DataField { System::String ^ get(); void set(System::String ^ value); };
public string DataField { get; set; }
member this.DataField : string with get, set
Public Property DataField As String

Property Value

String

The name of the field bound to the AutoGeneratedField. The default is an empty string (""), which indicates that this property is not set.

Examples

The following code example demonstrates how to use the DataField property to determine the value with which to set the DataField property of an AutoGeneratedField object.


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

Remarks

Use the DataField property to specify the name of the data field to bind to the AutoGeneratedField object. The AutoGeneratedField object automatically displays the values in the appropriate control, based on the Type property. For example, Boolean values are displayed in check box controls, while String values are displayed as plain text.

Applies to

See also