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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 188001 to 189000 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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