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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 219001 to 220000 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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