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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 182001 to 183000 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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