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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 227001 to 228000 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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