ajxa自动搜索功能

页面：

 <td width="130px">
                    <asp:TextBox ID="txt_carName" runat="server" class="inputkprice">
                    </asp:TextBox>
                    <cc1:AutoCompleteExtender ID="autoCompleteExtender" runat="server" DelimiterCharacters=""
                        ServicePath="" ServiceMethod="GetCarCompletionList" UseContextKey="True" MinimumPrefixLength="1"
                        TargetControlID="txt_carName">
                    </cc1:AutoCompleteExtender>
                </td>

 

 

后台代码：

    /// <summary>
    /// 自动搜索功能
    /// </summary>
    [System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
    public static string[] GetCarCompletionList(string prefixText, int count, string contextKey)
    {
        ObjModelDataSource<CAR_企业车队> obj = new ObjModelDataSource<CAR_企业车队>(CAR_企业车队.DBNAME, count, CAR_企业车队.COL_车队名称 + " like '%" + prefixText + "%'");
        string[] str = null;
        if (obj != null && obj.DataObjectSource.Tables[0].Rows.Count > 0)
        {
            str = new string[obj.DataObjectSource.Tables[0].Rows.Count];
            int nN = 0;
            foreach (CAR_企业车队 item in obj)
            {
                str[nN] = item.车队名称;
                nN++;
            }
        }
     
        return str;
    }