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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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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