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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 149001 to 150000 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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