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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 75001 to 76000 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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