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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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