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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 215001 to 216000 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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