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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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