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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 242001 to 243000 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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