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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 175001 to 176000 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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