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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 164001 to 165000 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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