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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 176001 to 177000 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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