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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 62001 to 63000 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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