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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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