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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 230001 to 231000 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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