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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 199001 to 200000 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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