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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 137001 to 138000 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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