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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 141001 to 142000 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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