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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 58001 to 59000 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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