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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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