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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 293001 to 294000 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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