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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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