Guide to Entity Framework with

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The markup code of the EntityDataSource control looks like the following:
ConnectionString="name=SecurityDBEntities"
DefaultContainerName="SecurityDBEntities" EnableFlattening="False"
EntitySetName="UserAuthentications"
EntityTypeFilter="UserAuthentication"
Select="it.[UserAuthenticationID], it.[UserAuthenticationTypeID],
it.[UserID], it.[UserName]">

This is what the complete markup code of the 
Default.aspx
web page looks like:

runat="server" ConnectionString="name=SecurityDBEntities" 
DefaultContainerName="SecurityDBEntities" 
EnableFlattening="False" 
EntitySetName="UserAuthentications" 
EntityTypeFilter="UserAuthentication" 
Select="it.[UserAuthenticationID], 
it.[UserAuthenticationTypeID], 
it.[UserID], it.[UserName]">

AutoGenerateColumns="False" 
DataSourceID="EntityDataSource1">

HeaderText="UserAuthenticationID" ReadOnly="True" 
SortExpression="UserAuthenticationID" />
DataField="UserAuthenticationTypeID" 
HeaderText="UserAuthenticationTypeID" 
ReadOnly="True" 
SortExpression="UserAuthenticationTypeID" />
HeaderText="UserID" ReadOnly="True" 
SortExpression="UserID" />

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Getting Started
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HeaderText="UserName" ReadOnly="True" 
SortExpression="UserName" />