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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 281001 to 282000 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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