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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 269001 to 270000 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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