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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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