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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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