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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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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