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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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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