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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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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