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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 174001 to 175000 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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