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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 157001 to 158000 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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