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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 199001 to 200000 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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