如何将值从Jquery传递到Asp.net Code Behind File？

Question

我有单选按钮，我在每个单选按钮上存储了一些值

$(document).on('change', '.vEditTamplateId', function ()
{
        var vpath = "";
        $(".vEditTamplateId").each(function () {
            if ($(this).is(":checked") == true) {

                vpath = $(this).attr('idd');
                $('input[id$=hdnEmpName]').val(vpath);
            }
        })

});

这是它的代码......

我使用过这个asp.net服务器端控件

<input type="hidden" id="hdnEmpName" runat="server" />

现在使用我背后的代码

            string vPath = hdnEmpName.Value;

我总是在这个

中得到空值

请建议我适当的建议..

Answer 1

简单方法

    function SearchText() {
        $(".autosuggest").autocomplete({
            source: function (request, response) {
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
                    url: "AutoSearchTest.asmx.cs/GetAutoCompleteData",
                    data: "{'username':'" + document.getElementById('txtSearch').value + "'}",
                    dataType: "json",
                    success: function (data) {
                        response($.map(data.d, function (item) {
                            return {
                                label: item.split('/')[0],
                                val: item.split('/')[1]
                            }
                        }));
                    },
                    error: function (xhr, status, error) {
                        alert("Error: " + xhr.responseText);
                    }
                });
            },
            select: function (event, ui) {
                $('#lblUserId').text(ui.item.val);
            }
        });
    }

[WebMethod]
public List<string> GetAutoCompleteData ( string username )
{
    List<string> result = new List<string>();
    using ( SqlConnection con = new SqlConnection( System.Configuration.ConfigurationManager.ConnectionStrings[ "ERP_ConnectionString" ].ToString() ) )
    {

        string query= "SELECT Code, [Description] from tablename Where Compcode = '01' and Description LIKE '%'+@SearchText+'%'";
        using ( SqlCommand cmd = new SqlCommand( query, con ) )
        {
            con.Open();
            cmd.Parameters.AddWithValue( "@SearchText", username );
            SqlDataReader dr = cmd.ExecuteReader();
            while ( dr.Read() )
            {
                result.Add( string.Format( "{0}/{1}", dr[ "Code" ], dr[ "Description" ] ) );
            }
        }
    }
    return result;
}