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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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