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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 151001 to 152000 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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