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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 283001 to 284000 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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