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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 176001 to 177000 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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