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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 67001 to 68000 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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