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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 158001 to 159000 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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