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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 203001 to 204000 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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