Using DbFunctions I get error: The specified type member 'Date' is not supported in LINQ to Entities

问题

Using EF 6 when I run this code even using DbFunctions.TruncateTime

var touches = analyticRepo.GetAll()
                          .Where(x => DbFunctions.TruncateTime(x.DateCreated.Date) == report.DateCreated.Date);
var test = touches.ToList();

I get this error:

The specified type member 'Date' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported.

Any idea how to solve this.

回答1:

You can pull the date up into a variable:

var reportDate = report.DateCreated.Date;
var touches = analyticRepo.GetAll()
                          .Where(x => DbFunctions.TruncateTime(x.DateCreated) == reportDate);
var test = touches.ToList();

来源：https://stackoverflow.com/questions/23912779/using-dbfunctions-i-get-error-the-specified-type-member-date-is-not-supported