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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 252001 to 253000 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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