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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Agent	Antonio Moreno	Bulgaria	1 2 3 4 5
2	Sales Agent	Antonio Moreno	USA	1 2 3 4 5
3	Sales Associate	Jaime Yorres	Spain	1 2 3 4 5
4	Sales Consultant	Antonio Moreno	Germany	1 2 3 4 5
5	Accountant	Jaime Yorres	France	1 2 3 4 5
6	Sales Consultant	Hanna Moos	Argentina	1 2 3 4 5
7	Sales Manager	Jaime Yorres	Italy	1 2 3 4 5
8	Accountant	Paul Henriot	England	1 2 3 4 5
9	Sales Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
10	Sales Consultant	Hanna Moos	Bulgaria	1 2 3 4 5
11	Owner	Howard Snyder	Germany	1 2 3 4 5
12	Accountant	Paul Henriot	Spain	1 2 3 4 5
13	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
14	Sales Consultant	Hanna Moos	Brazil	1 2 3 4 5
15	Sales Consultant	Paul Henriot	England	1 2 3 4 5
16	Sales Consultant	Matti Karttunen	Bulgaria	1 2 3 4 5
17	Accountant	Elizabeth Lincoln	Austria	1 2 3 4 5
18	Owner	Georg Pipps	Austria	1 2 3 4 5
19	Sales Agent	Pascale Cartrain	Bulgaria	1 2 3 4 5
20	Sales Representative	Antonio Moreno	Argentina	1 2 3 4 5
21	Sales Manager	Patricio Simpson	Spain	1 2 3 4 5
22	Marketing Assistant	Howard Snyder	Austria	1 2 3 4 5
23	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
24	Marketing Manager	Georg Pipps	Austria	1 2 3 4 5
25	Marketing Manager	Matti Karttunen	England	1 2 3 4 5
26	Marketing Manager	Georg Pipps	Austria	1 2 3 4 5
27	Marketing Manager	Matti Karttunen	Austria	1 2 3 4 5
28	Sales Manager	Antonio Moreno	Spain	1 2 3 4 5
29	Accountant	Jaime Yorres	England	1 2 3 4 5
30	Sales Agent	Elizabeth Lincoln	Germany	1 2 3 4 5
31	Sales Agent	Elizabeth Lincoln	Spain	1 2 3 4 5
32	Accountant	Paul Henriot	Austria	1 2 3 4 5
33	Owner	Hanna Moos	England	1 2 3 4 5
34	Sales Agent	Patricio Simpson	England	1 2 3 4 5
35	Marketing Assistant	Jaime Yorres	Germany	1 2 3 4 5
36	Sales Manager	Georg Pipps	Bulgaria	1 2 3 4 5
37	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
38	Sales Representative	Hanna Moos	Bulgaria	1 2 3 4 5
39	Sales Manager	Matti Karttunen	England	1 2 3 4 5
40	Sales Consultant	Georg Pipps	Germany	1 2 3 4 5
41	Sales Agent	Pascale Cartrain	Bulgaria	1 2 3 4 5
42	Owner	Georg Pipps	USA	1 2 3 4 5
43	Accounting Manager	Pascale Cartrain	Brazil	1 2 3 4 5
44	Accountant	Elizabeth Lincoln	Spain	1 2 3 4 5
45	Owner	Paul Henriot	Brazil	1 2 3 4 5
46	Sales Agent	Georg Pipps	Austria	1 2 3 4 5
47	Sales Consultant	Howard Snyder	France	1 2 3 4 5
48	Sales Associate	Patricio Simpson	Germany	1 2 3 4 5
49	Sales Agent	Matti Karttunen	Italy	1 2 3 4 5
50	Sales Manager	Georg Pipps	Germany	1 2 3 4 5
51	Sales Agent	Patricio Simpson	Argentina	1 2 3 4 5
52	Owner	Howard Snyder	France	1 2 3 4 5
53	Sales Representative	Howard Snyder	Germany	1 2 3 4 5
54	Marketing Manager	Georg Pipps	Argentina	1 2 3 4 5
55	Sales Agent	Antonio Moreno	Brazil	1 2 3 4 5
56	Marketing Manager	Pascale Cartrain	Spain	1 2 3 4 5
57	Accountant	Pascale Cartrain	Brazil	1 2 3 4 5
58	Sales Manager	Jaime Yorres	USA	1 2 3 4 5
59	Sales Representative	Georg Pipps	Brazil	1 2 3 4 5
60	Sales Consultant	Matti Karttunen	Italy	1 2 3 4 5
61	Owner	Howard Snyder	France	1 2 3 4 5
62	Marketing Manager	Pascale Cartrain	Argentina	1 2 3 4 5
63	Accounting Manager	Antonio Moreno	Spain	1 2 3 4 5
64	Accountant	Antonio Moreno	England	1 2 3 4 5
65	Accountant	Pascale Cartrain	Bulgaria	1 2 3 4 5
66	Marketing Manager	Antonio Moreno	Argentina	1 2 3 4 5
67	Sales Manager	Antonio Moreno	Austria	1 2 3 4 5
68	Sales Representative	Hanna Moos	Bulgaria	1 2 3 4 5
69	Sales Agent	Georg Pipps	Austria	1 2 3 4 5
70	Sales Representative	Howard Snyder	France	1 2 3 4 5
71	Accountant	Antonio Moreno	Austria	1 2 3 4 5
72	Accountant	Patricio Simpson	USA	1 2 3 4 5
73	Accountant	Hanna Moos	USA	1 2 3 4 5
74	Sales Consultant	Pascale Cartrain	Argentina	1 2 3 4 5
75	Owner	Hanna Moos	Germany	1 2 3 4 5
76	Accountant	Hanna Moos	Brazil	1 2 3 4 5
77	Accountant	Hanna Moos	Brazil	1 2 3 4 5
78	Sales Representative	Jaime Yorres	Germany	1 2 3 4 5
79	Sales Agent	Howard Snyder	France	1 2 3 4 5
80	Sales Manager	Georg Pipps	Italy	1 2 3 4 5
81	Accounting Manager	Howard Snyder	Italy	1 2 3 4 5
82	Sales Agent	Antonio Moreno	Germany	1 2 3 4 5
83	Sales Associate	Howard Snyder	Spain	1 2 3 4 5
84	Marketing Assistant	Antonio Moreno	France	1 2 3 4 5
85	Marketing Assistant	Hanna Moos	USA	1 2 3 4 5
86	Marketing Assistant	Hanna Moos	France	1 2 3 4 5
87	Owner	Jaime Yorres	USA	1 2 3 4 5
88	Accountant	Matti Karttunen	Austria	1 2 3 4 5
89	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
90	Accounting Manager	Howard Snyder	France	1 2 3 4 5
91	Marketing Manager	Georg Pipps	USA	1 2 3 4 5
92	Sales Agent	Pascale Cartrain	Italy	1 2 3 4 5
93	Marketing Manager	Elizabeth Lincoln	Argentina	1 2 3 4 5
94	Marketing Assistant	Georg Pipps	Bulgaria	1 2 3 4 5
95	Marketing Assistant	Hanna Moos	England	1 2 3 4 5
96	Sales Agent	Pascale Cartrain	England	1 2 3 4 5
97	Sales Manager	Georg Pipps	France	1 2 3 4 5
98	Accountant	Pascale Cartrain	Spain	1 2 3 4 5
99	Sales Associate	Paul Henriot	Austria	1 2 3 4 5
100	Sales Manager	Jaime Yorres	Spain	1 2 3 4 5


...101 102 103 104 105 106 107 108 109 110 ... Item 100001 to 101000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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