How can I get my Autocomplete extender to work?

Question

I\'ve tried to the letter to search for mistakes in my code, but i can\'t myself get that autocomplete extender to work. Help wanted.

Here\'s my code: (excerpt from my

Answer 1

As well as the GetCompletionList method being incorrectly declared as static, it needs to have two attributes; [System.Web.Services.WebMethod] and [System.Web.Script.Services.ScriptMethod]

So your declaration should look like this:

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

Also your service class should have the following attributes:

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
[System.Web.Script.Services.ScriptService]

The autocomplete extender will also appear to be broken if your GetCompletionList method throws an exception. To guard against this you should add a try..catch block around the code the function

[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public string[] GetCompletionList(string prefixText, int count)
{
    List returnData = new List();

    try
    {
        // database access code that sets returnData
    }
    catch (Exception ex)
    {
        // log the exception
    }

    return returnData.ToArray();
}