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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 135001 to 136000 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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