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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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