AutoGeneratedField.DataType 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取或设置在 AutoGeneratedField 对象中显示的值的数据类型。
public:
property Type ^ DataType { Type ^ get(); void set(Type ^ value); };public Type DataType { get; set; }member this.DataType : Type with get, setPublic Property DataType As Type属性值
Type，表示在 AutoGeneratedField 对象中显示的值的数据类型。 默认值为 String。
示例
以下示例演示如何在从控件派生DetailsView的自定义控件中以编程方式创建AutoGeneratedField对象时，使用DataType属性指定字段值的数据类型。
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
注解
使用 DataType 属性指定对象中显示的 AutoGeneratedField 值的数据类型。 数据类型确定在对象中 AutoGeneratedField 呈现的控件类型以显示值。 For example, a check box control is displayed when the type is Boolean.