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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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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