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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 48001 to 49000 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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