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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 198001 to 199000 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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