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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 130001 to 131000 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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