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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 281001 to 282000 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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