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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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