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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 85001 to 86000 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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