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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 171001 to 172000 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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