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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 42001 to 43000 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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