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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 243001 to 244000 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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