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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 204001 to 205000 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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