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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 228001 to 229000 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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