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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 271001 to 272000 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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