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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 254001 to 255000 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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