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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 145001 to 146000 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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