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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 251001 to 252000 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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