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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 219001 to 220000 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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