How to sorting dynamic in lambda entity framework?
I want to sort dynamic in lambda entity framework.I founded it more time, but seem not work.
////string column_name // the name of column in table <<< don't care this, I finished
////string sort_order // ASC or DESC <<< don't care this, I finished
using (var db = new ABCEntities())
{
// get dynamic type of column name , but i can not
// ???????????
var columnExp = typeof(LOCATION).GetProperty(column_name);
IEnumerable<LOCATION> query = db.LOCATIONs;
if(sort_order = "ASC")
{
query = query.OrderBy(columnExp).Tolist();
}
else
query = query.OrderByDescending(columnExp).Tolist();
}
I try with follow
query = db.LOCATIONs.OrderByDescending(q => q.GetType().GetProperty(column_name).GetValue(q, null)).ToList();
But get error at
LINQ to Entities does not recognize the method 'System.Object GetValue(System.Object, System.Object[])' method, and this method cannot be translated into a store expression
Can you tell me some mistake or wrong and how to fix it ? Thank you so much.
How about use Dynamic Linq ? It can generate query from string.
using (var db = new ABCEntities()){
var columnExp = "columnName";
var query = db.LOCATIONs;
if(sort_order = "ASC")
{
query = query.OrderBy(columnExp).Tolist();
}
else
{
query = query.OrderByDescending(columnExp).Tolist();
}
}
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