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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 176001 to 177000 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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