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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 294001 to 295000 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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