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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 178001 to 179000 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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