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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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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