遍历checkbox及部分选取问题
下面是我写的一段程序的部分代码，目的是实现树型目录，同时给每一项中添加一个checkbox.现在树型目录的显示和赋值都没问题。

但checkbox取不到值，还有我想实现选取上一级目录的checkbox时，属于它这一层的
checkbox同时选中，不知如何实现。请大家帮忙！

private   string   ShowTree()
{
string   ConnSql1= " ";              
string   ConnSql2= " ";                  
string   ConnSql3= " ";  
string   ConnSql4= " ";  
string   ConnSql5= " ";  
ConnSql1= "select   ID,Name   from   WebStruct   where   ParentID= '0 '   order   by   OrderN ";
DataSet   RsCatalog1=new   DataSet   ();
RsCatalog1=Dbc.getBinding   (ConnSql1, "s "); strTree= " <div   style= 'cursor:hand '> ";
if   (RsCatalog1.Tables[0].Rows.Count> 0)
{
for   (int   i=0;i <RsCatalog1.Tables[0].Rows.Count;i++)
{
ConnSql2= "select   ID,Name   from   WebStruct   where   ParentID= ' "+RsCatalog1.Tables[0].Rows   [i][ "ID "].ToString()   + " '   order   by   OrderN ";
                  DataSet   RsCatalog2=new   DataSet   ();
RsCatalog2=Dbc.getBinding   (ConnSql2, "s ");
if   (RsCatalog2.Tables[0].Rows.Count> 0)
{
strTree=strTree+ "&nbsp; <IMG   SRC= '../images/folder.gif '   border=0   ID= 'Gradesi "+i+ " '   CLASS= 'Outline '   WIDTH= '16 '   HEIGHT= '16 '> &nbsp; <INPUT   type= 'CheckBox '   ID= ' "+RsCatalog1.Tables[0].Rows   [i][ "ID "].ToString()+ " '   Text= ' "+RsCatalog1.Tables[0].Rows   [i][ "Name "].ToString()+ " '> &nbsp;&nbsp; "+RsCatalog1.Tables[0].Rows   [i][ "Name "].ToString()+ " <br> ";
strTree=strTree+ " <DIV   ID=Gradesi "+i+ "d     STYLE= 'display:none '   CLASS= 'hide '> ";
for   (int   j=0;j <RsCatalog2.Tables[0].Rows.Count;j++)
{
ConnSql3= "select   ID,Name   from   WebStruct   where   ParentID= ' "+RsCatalog2.Tables[0].Rows   [j][ "ID "].ToString()   + " '   order   by   OrderN ";
DataSet   RsCatalog3=new   DataSet   ();
RsCatalog3=Dbc.getBinding   (ConnSql3, "s ");
}
strTree=strTree+ " </div> ";
}
else
{ strTree=strTree+ "&nbsp; <IMG   SRC= '../images/ofolder.gif '   border=0   WIDTH= '16 '   HEIGHT= '16 '> &nbsp; <INPUT   type= 'CheckBox '   ID= ' "+RsCatalog1.Tables[0].Rows   [i][ "ID "].ToString()+ " '   Text= ' "+RsCatalog1.Tables[0].Rows   [i][ "Name "].ToString()+ " '> &nbsp;&nbsp; "+RsCatalog1.Tables[0].Rows   [i][ "Name "].ToString()+ " <br> ";
}
}
}
else
{
strTree=strTree+ " <font   color=red> <b> 尚未添加数据，请与系统管理员联系！ </b> </font> ";
}
strTree=strTree+ " </div> ";
return   strTree;
}

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