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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 261001 to 262000 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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