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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 201001 to 202000 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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