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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 178001 to 179000 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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