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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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