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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 23001 to 24000 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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