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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 245001 to 246000 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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