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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 241001 to 242000 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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