要是页面中有几个textbox还好说,直接设置他的readonly属性即可.但是要是很多呢?那就采用把所有的textbox包含到一个里面.代码如下:

<script runat="server" language="c#">
       void page_load(object sender, eventargs e)
       {      
                string  a="3";
               foreach (object item in myform.controls)//定义个类item，包含myform里的所有控件
               {
                       if (item is textbox)
                       {
                               textbox tbx = (textbox)item;//类的引用
                               tbx.text = "overred";
                               response.write(tbx);
                               if(a.tostring()=="3")
                               {tbx.enabled=false; }
                                else
                               {tbx.enabled=true; }
                       }
               }
       }
</script>