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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 186001 to 187000 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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