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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 138001 to 139000 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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