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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

<%@ 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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