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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 239001 to 240000 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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