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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 253001 to 254000 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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