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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 210001 to 211000 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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