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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 290001 to 291000 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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