Question
Hello i want filtering to LanguageSchool table but LanguageSchool table has relation with LanguageSchoolProgram table(many to many).
public class LanguageSchool
{
public virtual List<LanguageSchoolLanguageSchoolProgram> LanguageSchoolLanguageSchoolPrograms { get; set; }
}
public class LanguageSchoolProgram
{
public long Id { get; set; }
public virtual List<LanguageSchoolLanguageSchoolProgram> LanguageSchoolLanguageSchoolPrograms { get; set; }
}
public class LanguageSchoolLanguageSchoolProgram
{
public long LanguageSchoolProgramId { get; set; }
public virtual LanguageSchoolProgram LanguageSchoolProgram { get; set; }
public long LanguageSchoolId { get; set; }
public virtual LanguageSchool LanguageSchool { get; set; }
}
i have X Language School Program, Y Language School Program and Z Language Program and a lot of language school.
I want to select language schools but Language schools has containing X and Y program.
and i must use .AsQueryable() function.
Popular Answer
Your question is not clear... I am not sure how you store programs X, Y, Z? I am assuming these are program names.
You can defined your many to many relationship like this:
public class LanguageSchool
{
public int LanguageSchoolId { get; set; }
public virtual ICollection<LanguageSchoolProgram> LanguageSchoolPrograms { get; set; }
}
public class LanguageSchoolProgram
{
public int LanguageSchoolProgramId { get; set; }
public string ProgramName {get; set;} // this is X, Y or Z
public virtual ICollection<LanguageSchool> LanguageSchools { get; set; }
}
And use Contains to select schools with programs in the list:
string[] requiredPrograms = new string[] {"X", "Y", "X"};
var schoolsQueryable = dbContext.LanguageSchool.Where(
ls => requiredPrograms.contains(ls.LanguageSchoolProgram.ProgramName));
// if you don't want Queryable, then add ToList()
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