AJAX :: To Make Own Cascading Dropdown / Unabe To Populate

Nov 19, 2010

after

[Code]....

This line i get an error. Means nothing is populating there and no method is calling in .cs page too.in the script it returns error. my .cs page code for populting first dropdown as follows,
[Code]....

and the webmethod as follows


[Code]....
[Code]....

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[code]....

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[Code]....
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[code]....

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[Code]....

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<form id="form1" runat="server"> <div> <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> </asp:ToolkitScriptManager> <br /> <table> <tr> <td> <asp:DropDownList ID="DropDownList1" runat="server"
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Type]" LoadingText="Loading Type.." ParentControlID="DropDownList1" ServicePath="~/WebService.asmx" ServiceMethod="GetType"> </asp:CascadingDropDown> <br /> </td> </tr> </table> </div> </form>

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[WebMethod]
public AjaxControlToolkit.CascadingDropDownNameValue[] GetCategory(string knownCategoryValues, string category)
{
XmlDocument _doc = new XmlDocument();
_doc.Load(HttpContext.Current.Server.MapPath("~/C:/ItSupportCategory.xml"));
XmlNodeList list = _doc.SelectNodes("/CategoryList/Category");
List<CascadingDropDownNameValue> categorylist = new List<CascadingDropDownNameValue>();
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}
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}
[WebMethod]
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{
int catID;
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XmlDocument _doc = new XmlDocument();
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XmlElement root = (XmlElement)_doc.SelectSingleNode("/CategoryList/Category[@value='" + catID + "']");
for (int i = 0; i < root.ChildNodes.Count; i++)
{
string typeid = root.ChildNodes[i].Attributes["value"].Value.ToString();
string typename = root.ChildNodes[i].Attributes["name"].Value.ToString();
cascadingValues.Add(new CascadingDropDownNameValue(typename, typeid));
}
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<?xml version="1.0"?>
<CategoryList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test.xsd">
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<Type value="6" name="Reports"/>
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<Type value="8" name="Production"/>
<Type value="9" name="Office"/>
<Type value="10" name="Toner for Printer"/>
<Type value="11" name="Security Camre Lookup"/>
</Category>
</CategoryList>

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[Code]....

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<asp:DropDownList ID="ddlApplication" runat="server" CssClass="form"></asp:DropDownList>
<ajaxToolkit:CascadingDropDown
ID="cddApplication"
runat="server"
TargetControlID="ddlApplication"
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<ajaxToolkit:CascadingDropDown
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I have a web form where I have three dropdowns for Country State And City and there corresponding
ajaxToolkit:CascadingDropDowns.

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The problem occurs when I try to set selected values in these dropdowns as per the Values previously saved.

The Country loads properly and the selected value is set according.

The State is filled as per the selected country but its selected value is not set.

The City is not loaded at all (as the state doesn't have a selected value)

The Code is as Follows:

[Code]....

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