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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 95001 to 96000 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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