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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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