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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 211001 to 212000 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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