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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 259001 to 260000 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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