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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 187001 to 188000 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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