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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 147001 to 148000 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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