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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 239001 to 240000 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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