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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 186001 to 187000 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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