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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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