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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 142001 to 143000 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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