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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 38001 to 39000 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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