ClauseSelect/ClauseFrom/ClauseWhere/ClauseOrderBy are read-only properties that are available in AfterGenerateSql event (not available in BeforeGenerateSql). They contain corresponding parts of the automatically generated SQL SELECT statement (the complete statement is available in the Sql property). They can be used to modify/compose a statement, for example, to add TOP n or another clause after the SELECT clause.

'Declaration
 
Public ReadOnly Property ClauseFrom As System.String

public System.string ClauseFrom {get;}