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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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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