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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 124001 to 125000 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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