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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 140001 to 141000 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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