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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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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