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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 208001 to 209000 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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