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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 231001 to 232000 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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