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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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