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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 253001 to 254000 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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