protected object GetReferencedValue <T>(MGrid <T> pGrid, IMGridColumn column, Type pPropertyType, string pReferencedId)
{
var propInfo = column.GetType().GetProperty(nameof(MGridComplexPropertyColumn <object, object> .ReferencedValues));
var referencedValues = propInfo.GetValue(column) as IEnumerable;
var enumerator = referencedValues.GetEnumerator();
if (!enumerator.MoveNext())
{
return(null);
}
var firstValue = enumerator.Current;
var pi = pGrid.GetIdentifierProperty(firstValue);
//no idict support right now
var refIdValue = ReflectionHelper.ChangeType(pReferencedId, pi.PropertyType);
var queryable = referencedValues.AsQueryable();
var param = Expression.Parameter(pPropertyType, "p");
var property = Expression.Property(param, pi.Name);
var exprEqual = Expression.Equal(property, Expression.Constant(refIdValue));
var lambda = Expression.Lambda(exprEqual, param);
var method = FirstOrDefaultMethod.MakeGenericMethod(new[] { pPropertyType });
var val = method.Invoke(null, new object[] { queryable, lambda });
return(val);
}
