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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 62001 to 63000 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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