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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 217001 to 218000 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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