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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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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