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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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