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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 197001 to 198000 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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