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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 171001 to 172000 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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