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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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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