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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 272001 to 273000 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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