Just figured it out. I used a UpdatePanel around the GridView. The .Cs-class is the same.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="dragandDrop.aspx.cs" Inherits="WebApplication2.dragandDrop" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Drag and drop haha</title>
<script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.8.0.js" type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.22/jquery-ui.js"></script>
<link rel="Stylesheet" href="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.10/themes/redmond/jquery-ui.css" />
<script type="text/javascript">
$(function () {
$(".drag_drop_grid").sortable({
items: 'tr:not(tr:first-child)',
cursor: 'crosshair',
connectWith: '.drag_drop_grid',
axis: 'y',
dropOnEmpty: true,
receive: function (e, ui) {
$(this).find("tbody").append(ui.item);
var product = {};
product.Item = $("[id*=gvDest] tr:last").find("td:nth-child(1)").html();
product.Price = $("[id*=gvDest] tr:last").find("td:nth-child(2)").html();
$.ajax({
type: "POST",
url: "dragandDrop.aspx/SaveProduct",
data: '{product: ' + JSON.stringify(product) + '}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
alert("Product has been added successfully.");
}
});
return false;
}
});
$("[id*=gvDest] tr:not(tr:first-child)").remove();
});
</script>
<style type="text/css">
.GridSrc td
{
background-color: #A1DCF2;
color: black;
font-size: 10pt;
font-family: Arial;
line-height: 200%;
cursor: pointer;
width: 100px;
}
.GridSrc th
{
background-color: #3AC0F2;
color: White;
font-family: Arial;
font-size: 10pt;
line-height: 200%;
width: 100px;
}
.GridDest td
{
background-color: #eee !important;
color: black;
font-family: Arial;
font-size: 10pt;
line-height: 200%;
cursor: pointer;
width: 100px;
}
.GridDest th
{
background-color: #6C6C6C !important;
color: White;
font-family: Arial;
font-size: 10pt;
line-height: 200%;
width: 100px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<asp:Label ID="Label2" runat="server" Text="Products"></asp:Label>
<asp:GridView ID="gvSource" runat="server" CssClass="drag_drop_grid GridSrc" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="Item" HeaderText="Item" />
<asp:BoundField DataField="Price" HeaderText="Price" />
</Columns>
</asp:GridView>
<hr /><br />
<asp:Label ID="Label1" runat="server" Text="Shopping Cart"></asp:Label>
<hr />
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:GridView ID="gvDest" runat="server" CssClass="drag_drop_grid GridDest" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="Item" HeaderText="Item" />
<asp:BoundField DataField="Price" HeaderText="Price" />
</Columns>
</asp:GridView>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<asp:Label ID="Label3" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
<br /><hr />
<asp:Image ID="Image1" runat="server" ImageUrl="~/Images/Database_windows_azure_products.png" Width="500" Height="300" />
</form>
</body>
</html>