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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 236001 to 237000 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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