When using linq to sql queries,few functions like DateTime Comparison,FirstorDefault would not work and you would end up getting exception “LinqtoEntities is not supported by this function”.
Problem:
For instance I was trying to compare a column of Date-time type with today’s date,I had issue when comparing it since the sql server Date-Time type was of (yyyy-mm-dd) and today’s date was of (mm-dd-yyyy),I was not able to use ToString method to format date since linq to entities did not support it.
Solution:
LinqToEntities provides DBFunction and SqlFunction for sql related operations.It has got several methods like DateAdd,DatePart,TruncateTime etc…I had used the same to compare dates.
var somequery = from f in mytable where DbFunction.TruncateTime (f.mydatecolumn) == Dbfunction.TruncateTime(SqlFunction.GetDate())
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