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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 243001 to 244000 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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