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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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