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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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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