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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 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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