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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 68001 to 69000 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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