jQuery在asp.net中选择一个下拉列表控件

Question

I am using ASP.net and have a dropdown control.

 <asp:DropdownList runat="server" ID = "fieldReadOnlyContent" Enabled="false" class = "attribute"><asp:ListItem value = "0">False</asp:ListItem><asp:ListItem value = "1">True</asp:ListItem></asp:DropdownList>

I wanted to adjust the dropdown control via the clientside controls qith jquery. I get the value which it needs to be set to.

//d[3] will be either true or false.
$("#fieldReadOnlyContent").val(d[3]);

the above attempt didnt seem to set the item to properly enabled. HOw would i do this?

Answer 1

尝试这个：

$("#<%=fieldReadOnlyContent.ClientID%>").val(d[3]);

Answer 2

The item is not getting set because $("#fieldReadOnlyContent").val(d[3]); will check for the value .

For your case

if(d[3]=='false'){
 $("#fieldReadOnlyContent").val('0');
}
else
{
 $("#fieldReadOnlyContent").val('1');
}

Answer 3

fieldReadOnlyContent is not necessarily the ID given to the client-side HTML element.

You can use ClientIDMode="Static" server-side to control the client-side ID in .net4.0 ( source ), or <%= fieldReadOnlyContent.ClientID %> to inject the client id directly into the javascript otherwise.