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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 140001 to 141000 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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