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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 288001 to 289000 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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