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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 240001 to 241000 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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