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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 208001 to 209000 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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