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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 273001 to 274000 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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