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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 95001 to 96000 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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