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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 184001 to 185000 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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