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)
{
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>
/// <param name="obj">The object whose properties are being retrieved</param>
/// <param name="objProperty">The property of the object being retrieved</param>
/// <param name="control">The control whose ID matches the object's property name.</param>
/// <param name="controlPropertiesArray">An array of the control's properties</param>
/// <param name="propertyName">The name of the Control property being set</param>
/// <param name="type">The correct type for the Control property</param>
/// <returns>Boolean for whether the property was found and set</returns>
private static bool FindAndSetControlProperty(object obj, PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type)
{
// iterate through control properties
//
foreach (PropertyInfo controlProperty in controlPropertiesArray)
{
// check for matching name and type
//
if (controlProperty.Name == propertyName && controlProperty.PropertyType == type)
{
// set the control's property to the business object property value
//
controlProperty.SetValue(control, Convert.ChangeType(objProperty.GetValue(obj, null), type), null);
return true;
}
}
return false;
}
/// <summary>
/// Binds your the values in <see cref="Control"/>s to a business object.
/// </summary>
/// <param name="obj">The object whose properties are being bound to Control values</param>
/// <param name="container">The control in which the form Controls reside (usually a Page or ContainerControl)</param>
public static void BindControlsToObject(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)
{
Control control = container.FindControl(objProperty.Name);
if (control == null) continue;
if (control is ListControl)
{
ListControl listControl = (ListControl)control;
if (listControl.SelectedItem != null)
objProperty.SetValue(obj, Convert.ChangeType(listControl.SelectedItem.Value, objProperty.PropertyType), null);
}
else
{
// get the properties of the control
//
Type controlType = control.GetType();
PropertyInfo[] controlPropertiesArray = controlType.GetProperties();
// test for common properties
//
bool success = false;
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool));
if (!success)
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime));
if (!success)
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String));
if (!success)
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String));
}
}
}
private static bool FindAndGetControlProperty(object obj,PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type)
{
// 在整个控件属性中进行迭代
foreach (PropertyInfo controlProperty in controlPropertiesArray)
{
// 检查匹配的名称和类型
if (controlProperty.Name == "Text" && controlProperty.PropertyType == typeof(String))
{
// 将控件的属性设置为
// 业务对象属性值
try
{
objProperty.SetValue(obj, Convert.ChangeType(controlProperty.GetValue(control, null), objProperty.PropertyType), null);
return true;
}
catch
{
// 无法将来自窗体控件
// 的数据转换为
// objProperty.PropertyType
return false;
}
}
}
return true;
}
}
}
