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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 43001 to 44000 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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