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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 231001 to 232000 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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