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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 133001 to 134000 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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