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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 121001 to 122000 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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