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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 196001 to 197000 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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