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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 271001 to 272000 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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