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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 70001 to 71000 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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