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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 49001 to 50000 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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