页面上有两个dropdownlist，当一个dropdownlist选择某些特定值的时候，将另一个dropdownlist隐藏？？

Question

this.ddlpart.visiable=false;
就可以了

Answer 1

in code behind:dropdownlist1.attributes.add("onClick","javascrip:MyFunction();");in aspx:<script language="javascript">
function MyFunction()
{
   var DDL1 = document.all["dropdownlist1"];
   var DDL2 = document.all["dropdownlist2"];
   if(DDL1.options[DDL1.selectedIndex].text == "管理员" 
      || DDL1.options[DDL1.selectedIndex].text == "总经理")
      DDL2.visibility="hidden";
   else
      DDL2.visibility="visible";
}
</script>

Answer 2

先将ddllevel的AutoPostBack 设成True.
private void ddllevel_SelectedIndexChanged(object sender, System.EventArgs e)
{
  if(ddllevel.SelectIndex==0 || ddllevel.SelectIndex==1)
  {  
      this.ddlpart.Visible=false;
  }
}

Answer 3

我试过，athossmth(athos) 的方法，不起作用，选择“管理员”或“总经理”时，并没有隐藏，将onClick改成onChange也不行？

Answer 4

<script language="javascript">
function usertype()
{
   var DDL1 = document.all["ddlposition"];
   var DDL2 = document.all["ddldept"];
   if(DDL1.options[DDL1.selectedIndex].text == "管理员" 
      || DDL1.options[DDL1.selectedIndex].text == "总经理")
      DDL2.visibility="hidden";
   else
      DDL2.visibility="visible";
}
</script>
.cs 中在page_load里:ddlposition.Attributes.Add("onClick()","javascrip:usertype();");这样不行，我改行
ddlposition.Attributes.Add("onChange()","javascrip:usertype();");
也还是不行

Answer 5

ddlposition.Attributes.Add("onClick()","javascrip:usertype();");这里的onclick不要()改成:
ddlposition.Attributes.Add("onclick","javascrip:usertype();");