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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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