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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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