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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 88001 to 89000 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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