为.net中的ListBox控件添加双击事件

我在用dotnet做一个项目的过程中，遇到了一个listbox的问题：通过在一个listbox中双击，把选中的项添加到另一个listbox中，但listbox控件本身并没有该事件，那么如何实现呢？我就想到了客户端脚本javascrit,通过查阅相关资料,终于把这个问题解决了，现在写出来与大家分享，希望能对大家有所帮助。
        这里有三个问题：
        第一：双击所要执行的javascript代码是什么？
                    注意：javascript代码的语法要正确，即每一行都要以“；”结尾；
                    function change()
                        {
                             var addoption=document.createelement("option");
                             var index1;
                             if(document.form1.listbox1.length==0)return(false);
                              index1=document.form1.listbox1.selectedindex; 
                             if(index1<0)return(false);
                              addoption.text=document.form1.listbox1.options(index1).text;
                              addoption.value=document.form1.listbox1.value;
                             document.form1.listbox2.add(addoption);
                             document.form1.listbox1.remove (index1);
                         }
        第二：如何将 javascript 代码转换为c#代码？
                    public static void listbox_dblclick(page page,system.web.ui.webcontrols.webcontrol webcontrol,string                                 sourcecontrolname,string targetcontrolname)
                     {
                           sourcecontrolname = "document.form1." +  sourcecontrolname;
                           targetcontrolname = "document.form1." +  targetcontrolname;

 string js = "<script language=javascript> function change(sourcecontrolname,targetcontrolname)";
                           js += "{";
                           js +=     "var addoption=document.createelement( option ); /n";
                           js += "  var index1; /n";
                           js += "if(sourcecontrolname.length==0)return(false);/n";
                           js += "  index1=sourcecontrolname.selectedindex; /n ";
                           js += "  if(index1<0)return(false);/n";
                           js += " addoption.text=sourcecontrolname.options(index1).text; /n";
                           js += "addoption.value=sourcecontrolname.value; /n";
                           js += "targetcontrolname.add(addoption); /n";
                           js += "sourcecontrolname.remove (index1) /n";                            js +="}";
                           js += "</script>";
                            //注册该 javascript ；
                           page.registerstartupscript("",js);
                            //为控件添加双击事件；
                           webcontrol.attributes.add("ondblclick","change(" + sourcecontrolname + "," + targetcontrolname +                                 ");");
                      }
           &nbsp;        在该方法中,sourcecontrolname是要绑定双击事件的控件，targetcontrolname是接收双击事件选定项的控件。    
                    这里有一个问题，如何让对象作为参数传给javascript的change函数，我这里采用的是用  sourcecontrolname  ,targetcontrolname 来传递两个listbox的name, 然后与“document.form1.“组合成一个串来传递给javascript的change函数，即
                            sourcecontrolname = "document.form1." +  sourcecontrolname;
                           targetcontrolname = "document.form1." +  targetcontrolname;

        第三：如何为控件添加双击事件？
                    用controlname.attributes.add(“属性名称”，“函数名称或代码”);