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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 198001 to 199000 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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