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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 259001 to 260000 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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