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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 221001 to 222000 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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