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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 164001 to 165000 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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