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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 34001 to 35000 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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