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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 245001 to 246000 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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