有看到一网友在论坛上问问题，Insus.NET尝试了一下，下面提供Insus.NET所理解的基础之上的解决方案，仅供参考，原问题如下：
在解决之前，先准备一些数据吧。端午节快到了，公司分福利，希望你们公司也有。数据集是一个Hashtable:
private Hashtable GetData()
{
Hashtable ht = new Hashtable();
ht.Add(1, "粽子");
ht.Add(2, "苹果");
ht.Add(3, "雪梨");
ht.Add(4, "荔技");
ht.Add(5, "现金");
return ht;
}
View Code
在站点上创建一个网页，在.aspx页面上，写上下面代码：
到Insus.NET的博客上，下载两个给件，是专为ListControl绑定的，已经重构过了的：
解压之后，把DLL拉入BIN目录中。如：
然后，我们去.aspx.cs为页面的CheckBoxList，DropDownList，RadioButtonList控件绑定数据源。
接下来，我们想在文本框填入一些值，这个值能够指向那些控件中选项的值，如果没有对应的值，控件将是回归至默认(缺省值)的状态。由于每个控件是不同的对象，为了能让它们能够互动，有一致的动作，Insus.NET写一个接口：
下面，要看你需要什么控件来互动了，也就是什么控件来接收文本框的值了。需要的控件，均接中写一个适配器(Adapter)，由于Insus.NET仅列举了三个，因此分别写三个适配器。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for InsusCheckBoxList
/// </summary>
namespace Insus.NET
{
public class InsusCheckBoxList: InsusAdapter
{
CheckBoxList _CheckBoxList;
public InsusCheckBoxList()
{
//
// TODO: Add constructor logic here
//
}
public void SetValue(WebControl wc, object value)
{
if (wc is CheckBoxList)
{
_CheckBoxList = (CheckBoxList)wc;
foreach (ListItem li in this._CheckBoxList.Items)
{
li.Selected = li.Text == value.ToString() ? true : false;
}
}
}
}
}
InsusCheckBoxList
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for InsusDropDownList
/// </summary>
namespace Insus.NET
{
public class InsusDropDownList: InsusAdapter
{
DropDownList _DropDownList;
public InsusDropDownList()
{
//
// TODO: Add constructor logic here
//
}
public void SetValue(WebControl wc, object value)
{
if (wc is DropDownList)
{
_DropDownList = (DropDownList)wc;
this._DropDownList.ClearSelection();
foreach (ListItem li in this._DropDownList.Items)
{
if (li.Text == value.ToString ())
this._DropDownList.Items.FindByText(value.ToString()).Selected = true;
}
}
}
}
}
InsusDropDownList
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for InsusRadioButtonList
/// </summary>
namespace Insus.NET
{
public class InsusRadioButtonList: InsusAdapter
{
RadioButtonList _RadioButtonList;
public InsusRadioButtonList()
{
//
// TODO: Add constructor logic here
//
}
public void SetValue(WebControl wc, object value)
{
if (wc is RadioButtonList)
{
_RadioButtonList = (RadioButtonList)wc;
foreach (ListItem li in this._RadioButtonList.Items)
{
li.Selected = li.Text == value.ToString() ? true : false;
}
}
}
}
}
InsusRadioButtonList
如果还有基它，继续写出来......
下面就是Button按钮的Click事件：
好了，还是看看最终的效果吧：
以下内容，于2013-06-11 09:00添加：
早上来看到第一次所想的，有些地方，觉得设计不好。按照面向对象的设计理念来说，接口设计的藕合性过高，接口内方法SetValue需要带两个参数。理想的带一个参数为好。
因此，Insus.NET把接口改为：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for InsusAdapter
/// </summary>
namespace Insus.NET
{
public interface InsusAdapter
{
void SetValue(object value);
}
}
View Code
这样一改的话，那怎样知道是给那个一个控制赋值？ 解决这个问题，我们可以使用构造函数来处理。回到上面的那三个适配器InsusCheckBoxList，InsusDropDownList，InsusRadioButtonList，下面是重构好之后的适配器：
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for InsusCheckBoxList
/// </summary>
namespace Insus.NET
{
public class InsusCheckBoxList : InsusAdapter
{
CheckBoxList _CheckBoxList;
public InsusCheckBoxList(CheckBoxList checkBoxList)
{
this._CheckBoxList = checkBoxList;
}
public void SetValue(object value)
{
foreach (ListItem li in this._CheckBoxList.Items)
{
li.Selected = li.Text == value.ToString() ? true : false;
}
}
}
}
InsusCheckBoxList
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for InsusDropDownList
/// </summary>
namespace Insus.NET
{
public class InsusDropDownList : InsusAdapter
{
DropDownList _DropDownList;
public InsusDropDownList(DropDownList dropDownList)
{
this._DropDownList = dropDownList;
}
public void SetValue(object value)
{
this._DropDownList.ClearSelection();
foreach (ListItem li in this._DropDownList.Items)
{
if (li.Text == value.ToString())
this._DropDownList.Items.FindByText(value.ToString()).Selected = true;
}
}
}
}
InsusDropDownList
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
/// <summary>
/// Summary description for InsusRadioButtonList
/// </summary>
namespace Insus.NET
{
public class InsusRadioButtonList : InsusAdapter
{
RadioButtonList _RadioButtonList;
public InsusRadioButtonList(RadioButtonList radioButtonList)
{
this._RadioButtonList = radioButtonList;
}
public void SetValue(object value)
{
foreach (ListItem li in this._RadioButtonList.Items)
{
li.Selected = li.Text == value.ToString() ? true : false;
}
}
}
}
InsusRadioButtonList
重构之后，控件就可以在适配器new实例化时，就传入去了。
可以参考下面重构全过程：
以下内容，于2013-06-11 10:20添加：
此部分内容，只是重构一下comments的语句，因为每个控件的适配器有实作接口，所以使用多态来重构它们。
