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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 266001 to 267000 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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