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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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