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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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