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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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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