Question

I followed a very simple example of autocompletion using ajax and cannot get mine to work. I stepped threw the code and it looks like it never goes to my webmethod. What else is there to check?

.aspx

    <asp:ScriptManager ID="ScriptManager1" runat="server">

    </asp:ScriptManager>

<asp:TextBox ID="txtFrom" runat="server">
</asp:TextBox>
<ajaxToolkit:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" TargetControlID="txtFrom" MinimumPrefixLength="1" ServiceMethod="GetSuggestions">
</ajaxToolkit:AutoCompleteExtender>

.aspx.cs

[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public static string[] GetSuggestions(string prefixText, int count, string contextKey)
{
    string[] members = { "Nick", "John", "Bob" };

    return (from m in members where m.StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase) select m).Take(count).ToArray();
}

I created a webservice to use instead of putting my method directly in the class, but I get the same result.

Answer 1

public static string[] GetSuggestions(string prefixText, int count, string contxtKey)

You wrote contxtKey instead of contextKey

Remember, the signature (type, parameters name, return type) has to match exactly.

If the context key is used, it should
have the same signature with an
additional parameter named contextKey
of type string:

[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public string[] GetCompletionList(
    string prefixText, int count, string contextKey) { ... }

Note that you can replace
“GetCompletionList” with a name of
your choice, but the return type and
parameter name and type must exactly
match, including case.