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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 141001 to 142000 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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