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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 237001 to 238000 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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