ASP.NET BootStrap模态框如何传值

点击编辑修改商品，如何显示选择的商品信息,可以在后台代码中写么

构造函数里传值

你好，
你可以看一下这个例子：其中用到的知识点是用jquery ajax 将值传给后台。

<form id="form1" runat="server">
<div>
    <asp:Button ID="btnModel" Text="Open Model" runat="server" />
    <br />
    <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span></button>
                    <h4 class="modal-title" id="myModalLabel">
                        Modal title</h4>
                </div>
                <div class="modal-body">
                    <table border="0" cellpadding="0" cellspacing="0">
                        <tr>
                            <td>
                                Name:
                            </td>
                            <td>
                                <asp:TextBox ID="txtname"  runat="server" />
                            </td>
                            <td>
                                Username:
                            </td>
                            <td>
                                <asp:TextBox ID="txtUserName" runat="server" />
                            </td>
                        </tr>
                        <tr>
                            <td>
                                ContentPost:
                            </td>
                            <td>
                                <asp:TextBox ID="txtcontentPost" runat="server" />
                            </td>
                            <td>
                                Comments:
                            </td>
                            <td>
                                <asp:TextBox ID="txtcomments" runat="server" />
                            </td>
                        </tr>
                    </table>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">
                        Close</button>
                    <asp:Button ID="btnSubmit" Text="save" CssClass="btn btn-success" runat="server" />
                </div>
            </div>
        </div>
    </div>
    <br />
    <div id="dialog" style="display: none; top: 0; left: 45%; position: fixed; background-color: Yellow;
        height: 50px; border: solid; line-height: 45px;">
        <span id="lblText" style="color: Green; top: 50px;"></span>
    </div>
</div>
<div>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
    <script type="text/javascript" src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" />
    <script type="text/javascript">
        $(function () {
            $('[id*=btnModel]').click(function () {
                $('[id*=myModal]').modal('show');
                return false;
            });
            $('[id*=btnSubmit]').click(function () {
                var id = "1";
                var name = $('[id*=txtname]').val();
                var username = $('[id*=txtUserName]').val();
                var contentPost = $('[id*=txtcontentPost]').val();
                var comments = $('[id*=txtcomments]').val();
                var senddate = 2017 - 07 - 31;
                var imagename1 = "Image1";
                var path = "path1";
                var imageuser = "imagepath";
                var status = "";
                $.ajax({
                    type: "POST",
                    url: "Default.aspx/InsertCommenttype",
                    data: '{id:"' + id + '",name:"' + name + '",username:"' + username + '",contentpost:"' + contentPost + '",comments:"' + comments + '",senddate:"' + senddate + '",imagename1:"' + imagename1 + '",path:"' + path + '",imageuser:"' + imageuser + '"}',
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: function (response) {
                        $('#myModal').modal('hide');
                        $("#lblText").html('Record saved successfully.');
                        $('#dialog').fadeIn('slow').delay(1000).fadeOut('slow');
                        // clear value
                        //$(".id").html('');
                        //$(".imageuser").attr('src', '');
                        //$(".username").html('');
                        //$(".name").html('');
                        //$(".senddate").html('');
                        //$(".contentpost").html('');
                        //$(".imagename1").html('');
                        //$(".path").html('');
                    },
                    failure: function (response) {
                        alert(response.d);
                    },
                    error: function (response) {
                        alert(response.d);
                    }
                });
                return false;
            });
        });
    </script>
</div>
</form>

C# :

[WebMethod]
public static string InsertCommenttype(string id, string name, string username, string contentpost, string senddate, string comments, string imageuser, string imagename1, string path)
{
    string constr = ConfigurationManager.ConnectionStrings["DB"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (SqlCommand cmd = new SqlCommand("INSERT INTO [POSTS](UserName,fName,Content,ID,PostDate,Comments,FImageName,ImageName,TotalCount,Path) VALUES(@UserName,@fName,@Content,@ID,@PostDate,@Comments,@FImageName,@ImageName,@TotalCount,@Path)"))
        {
            cmd.Connection = con;
            cmd.CommandType = CommandType.Text;
            // cmd.Parameters.AddWithValue("@ID", id);
            cmd.Parameters.AddWithValue("@UserName", HttpContext.Current.Session["userName"].ToString());
            cmd.Parameters.AddWithValue("@fName", name);
            cmd.Parameters.AddWithValue("@Content", contentpost);
            cmd.Parameters.AddWithValue("@PostDate", senddate);
            cmd.Parameters.AddWithValue("@ID", id);
            cmd.Parameters.AddWithValue("@Comments", comments);
            cmd.Parameters.AddWithValue("@FImageName", imageuser);
            cmd.Parameters.AddWithValue("@ImageName", imagename1);
            cmd.Parameters.AddWithValue("@TotalCount", 1);
            cmd.Parameters.AddWithValue("@Path", path);
            con.Open();
            cmd.ExecuteNonQuery();
            con.Close();
        }
    }
 
    return "Your Submited";
}