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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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