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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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