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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 230001 to 231000 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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