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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 290001 to 291000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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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