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单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application contains a DataSourceControl named CategoriesDataSource that is bound to a Microsoft SQL Server 2005 table. The CategoryName column is the primary key of the table. You write the following code fragment in a FormView control：   01    02   Category：   03      09      10     You need to ensure that the changes made to the CategoryID field can be written to the database.  Which code fragment should you insert at line 04？（）

A、SelectedValue='<%# Eval("CategoryID") %>' 

B、SelectedValue='<%# Bind("CategoryID") %>' 

C、SelectedValue='<%# Eval("CategoryName") %>' 

D、SelectedValue='<%# Bind("CategoryName") %>'

  • B

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