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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 263001 to 264000 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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