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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 33001 to 34000 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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