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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 183001 to 184000 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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