Question
I wish to get a list of columns names, types and whether the column is a PK of a table object in Entity Framework.
How do I do this in C# (4.0) (ideally generically)?
The winning answer will be one that does it efficiently and most importantly generically.
Accepted Answer
Got it - I used a linq based reflection query:
IEnumerable<FieldList> properties = from p in typeof(T).GetProperties()
where (from a in p.GetCustomAttributes(false)
where a is EdmScalarPropertyAttribute
select true).FirstOrDefault()
Sorted! Thanks for the suggestions all.
FYI - I am creating a dynamic where clause using LINQ, dynamic lambda expressions to build e.g. search which will automatically search through all columns by default. But I also needed the column names to verify because I will allow this to be overridden and these calls will be done via javascript ajax post whose input cannot be trusted - so needed to verify the column names.
I used the above to place the results into a custom object with properties called FieldName, FieldType, PrimaryKey. Ta daaa.
Customise it further with
IEnumerable<FieldList> properties = from p in typeof(T).GetProperties()
where (from a in p.GetCustomAttributes(false)
where a is EdmScalarPropertyAttribute
select true).FirstOrDefault()
select new FieldList
{
FieldName = p.Name,
FieldType = p.PropertyType,
FieldPK = p.GetCustomAttributes(false).Where(a => a is EdmScalarPropertyAttribute && ((EdmScalarPropertyAttribute)a).EntityKeyProperty).Count() > 0
};
Popular Answer
if you want only column names then ,i got the best answer :
var properties = (from t in typeof(YourTableName).GetProperties()
select t.Name).ToList();
var name= properties[0];
Licensed under: CC-BY-SA with attribution
Not affiliated with Stack Overflow
