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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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