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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 275001 to 276000 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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