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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 147001 to 148000 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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