jQuery-UI自动完成asp.net搜索文本框

Question

我的前端有一个文本框，我试图根据sql查询返回的内容来实现自动建议。 我正在使用jquery库并将其导入到我的解决方案中。 当我继续运行该程序时，尽管我在搜索框中输入了字母，但它却遇到了“不匹配错误”。 我在代码中缺少什么吗？

下面的aspx代码：

<link href="jquery-ui.css" rel="stylesheet" type="text/css" />  
<script src="Scripts/jquery.min.js" type="text/javascript"></script>  
<script src="Scripts/jquery-ui.min.js" type="text/javascript"></script>

    <script type="text/javascript">
    $(document).ready(function () {
        SearchText();
    });
    function SearchText() {
        $("#SearchBox").autocomplete({
            source: function (request, response) {
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
                    url: "CompanyPage.aspx/GetCompanyName",
                    data: "{'cmpName':'" + document.getElementById('SearchBox').value + "'}",
                    dataType: "json",
                    success: function (data) {
                        response(data.d);
                    },
                    error: function (result) {
                        alert("No Match");
                    }
                });
            }
        });
    }
</script>  

<asp:TextBox ID="SearchBox" placeholder="Enter company name to search on" runat="server" Width="322px" Height="16px" style="margin-left: 22px; margin-top: 0px" OnTextChanged="SearchBox_TextChanged"></asp:TextBox>

aspx.cs代码：

 [WebMethod] 
        public static List<string> GetCompanyName(string cmpName)
        {
            List<string> cmpResult = new List<string>();
            string connectionString = ConfigurationManager.ConnectionStrings["DBConnection"].ConnectionString;
            SqlConnection cn = new SqlConnection(connectionString);
            using (SqlCommand cmd = new SqlCommand("[searchCompanyName]", cn))
            {
                    cmd.Connection = cn;
                    cn.Open();
                    cmd.Parameters.AddWithValue("@CompanyName", cmpName);
                    SqlDataReader dr = cmd.ExecuteReader();
                    while (dr.Read())
                    {
                        cmpResult.Add(dr["CompanyName"].ToString());
                    }
                    cn.Close();
                    return cmpResult;
            }

        }  

SQL存储过程：

    ALTER PROCEDURE [dbo].[searchCompanyName] 
    @CompanyName varchar(50)
AS
BEGIN
    SET NOCOUNT ON;

    SELECT CompanyName FROM Company
    WHERE CompanyName like @CompanyName + '%'

END

Answer 1

阿贾克斯：

    $(document).ready(function () {
    SearchText();
});
function SearchText() {
    $(".autosuggest").autocomplete({
        source: function (request, response) {
            $.ajax({
                type: "POST",
                contentType: "application/json; charset=utf-8",
                url: "CompanyPage.aspx/GetCompanyData",
                data: "{'companyname':'" + document.getElementById('SearchBox').value + "'}",
                dataType: "json",
                success: function (data) {
                    if (data != null) {

                        response(data.d);
                    }
                },
                error: function (result) {
                    alert("Error");
                }
            });
        }
    });
}

ajax.cs

[WebMethod]
        public static List<string> GetCompanyData(string companyname)
    {
        List<string> result = new List<string>();
        string connectionString = ConfigurationManager.ConnectionStrings["DBConnection"].ConnectionString;
        SqlConnection con = new SqlConnection(connectionString);


        SqlCommand cmd = new SqlCommand("[searchCompanyName]", con);
        cmd.CommandType = CommandType.StoredProcedure;
            con.Open();
            cmd.Parameters.AddWithValue("@companyname", companyname);
                SqlDataReader dr = cmd.ExecuteReader();

                while (dr.Read())
                {
                    result.Add(dr["companyname"].ToString());
                }
                return result;
        }