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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 244001 to 245000 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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