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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 202001 to 203000 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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