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用反射将业务对象绑定到ASP.NET__教程
日期:2007-5-15 21:03:33 人气:80     [ ]
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MSDN上面的代码和下载的代码包也有那么多问题,晕死。
综合下载的代码和MSDN上的说明,修改了这段代码,现在能正常使用,特别是很多字段放在窗体上的时候,使用起来非常方便。

具体用法:把窗体上的控件ID属性与实体层的属性设置成一致。
绑定实体层到窗体的时候用:
web.model .test Test = new web.model.test();
Test = bll.GetModel(id);
BindObjectToControls(model,this);

要把窗体数据绑定到实体层的时候用:
BindControlsToObject(model,this);

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Reflection;

namespace WEB
{
/// <summary>
/// A class with two static methods <see cref="BindObjectToControls"/> and <see cref="BindControlsToObject"/>
/// used to bind the values of and object's properties with web <see cref="Control"/>s that have their
/// ID property set to the name of the object property.
/// </summary>
public class FormBinding
{
/// <summary>
/// Binds an object's properties to <see cref="Control"/>s with the same ID as the propery name.
/// </summary>
/// <param name="obj">The object whose properties are being bound to forms Controls</param>
/// <param name="container">The control in which the form Controls reside (usually a Page or ContainerControl)</param>
public static void BindObjectToControls(object obj, Control container)
{
if (obj == null) return;

// Get the properties of the business object
//
Type objType = obj.GetType();
PropertyInfo[] objPropertiesArray = objType.GetProperties();

foreach (PropertyInfo objProperty in objPropertiesArray)
{

[page_break] 

Control control = container.FindControl(objProperty.Name);
if (control == null) continue;

// handle ListControls (DropDownList, CheckBoxList, RadioButtonList)
//
if (control is ListControl)
{
ListControl listControl = (ListControl)control;
string propertyValue = objProperty.GetValue(obj, null).ToString();
ListItem listItem = listControl.Items.FindByValue(propertyValue);
if (listItem != null) listItem.Selected = true;

}

else
{
// get the properties of the control
//
Type controlType = control.GetType();
PropertyInfo[] controlPropertiesArray = controlType.GetProperties();

// test for common properties
//
bool success = false;
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool));

if (!success)
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime));

if (!success)
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String));

if (!success)
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String));

}
}
}

/// <summary>
/// Looks for a property name and type on a control and attempts to set it to the value in an object's property
/// of the same name.
/// </summary>
///

出处:本站原创 作者:佚名
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