hi, there is a CascadingDropDown on my page.
in aspx
<asp:DropDownList ID="ddlForm" runat="server" CssClass="ip-bx" />
<cc1:CascadingDropDown ID="CascadingDropDown1" runat="server" TargetControlID="ddlForm"
Category="Form" PromptText="please select a ..." ServiceMethod="GetDropDownContentsPageMethod1" />
in code behind
[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public static AjaxControlToolkit.CascadingDropDownNameValue[]
GetDropDownContentsPageMethod1(string knownCategoryValues, string category)
{
...
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