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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 146001 to 147000 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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