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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 188001 to 189000 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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