Hi everyone,

I'd like to create a drop down list with auto complete.  I'm using Visual Studio 2008 with C# and AJAX.  Is there a way to do it?

 The drop down list is the list of customer code from a database.  I'm able to have the drop down list by bounding it to the database result but don't know how to have the auto complete function working.

Any help would be greatly appreciated.

QBui

A text box will get  Autocomplete  values from a webmethod.Follow the example. 

  <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
            <cc1:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" UseContextKey="True"
                ServiceMethod="GetCompletionList" TargetControlID="TextBox1" MinimumPrefixLength="3"
                CompletionSetCount="3" EnableCaching="true">
            </cc1:AutoCompleteExtender>

    [System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
    public static string[] GetCompletionList(string prefixText, int count, string contextKey)
    {
        string[] st = new string[4];
        st[0] = prefixText + "hai";
        st[1] = prefixText + "hai";
        st[2] = prefixText + "hai";
        st[3] = prefixText + "hai";
        return st;
    }

Thanks for your reply but I don't think I want to autocomplete a text box, I'd like to have a drop down list which already bound to a dataset and then the user can just enter the first two letters and it just autocomplete whatever it is in the bounded dataset. 

Probably this is impossible to have a drop down list with autocomplete.

Qbui

I too need it urgently. Any help on 'AutoComplete a DropDownList' please.