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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 131001 to 132000 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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