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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 70001 to 71000 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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