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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 192001 to 193000 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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