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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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