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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 143001 to 144000 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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