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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 47001 to 48000 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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