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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 147001 to 148000 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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