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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 295001 to 296000 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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