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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 104001 to 105000 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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