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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 70001 to 71000 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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