public PropertyMapping MapProperty <TRecord>(Expression <Func <TRecord, object> > expression)
{
var property = GetProperty <TRecord>(expression);
var propertyMap = new PropertyMapping(property)
{
MappedColumnIndex = getMaxIndex() + 1
};
_propertyMappings.Add(propertyMap);
return(propertyMap);
}
//private Dictionary<string, PropertyInfo> _propertyMappings = new Dictionary<string, PropertyInfo>();
private void AutoGeneratePropertyMappings <TRecord>()
{
if (_propertyMappings.Count == 0)
{
var properties = typeof(TRecord).GetProperties().Where(x => x.PropertyType.Module.ScopeName == "System.Private.CoreLib.dll").ToArray();
//var properties = typeof(TRecord).GetProperties();
if (FirstRowIsHeader)
{
AutoGeneratePropertyMappingsByName <TRecord>(properties);
//get the propertied that were not mapped
var headers = FieldHeaders.ToList <string>();
var mappedNames = _propertyMappings.Select(n => n.MappedColumnName).ToList();
foreach (var property in properties)
{
var existingPM = _propertyMappings.Where(m => m.PropertyInfo == property).FirstOrDefault();
if (existingPM != null)
{
continue;
}
for (int i = 0; i < FieldHeaders.Length; i++)
{
if (mappedNames.Contains(FieldHeaders[i]))
{
continue;
}
PropertyMapping pm = new PropertyMapping(property)
{
MappedColumnIndex = i,
MappedColumnName = FieldHeaders[i],
};
mappedNames.Add(FieldHeaders[i]);
_propertyMappings.Add(pm);
break;
}
}
}
else
{
AutoGeneratePropertyMappingsByIndex <TRecord>(properties);
}
}
}
private void AutoGeneratePropertyMappingsByIndex <TRecord>(PropertyInfo[] properties)
{
foreach (var property in properties)
{
int index = getMaxIndex() + 1;
if (index < CurrentRecord.Length)
{
PropertyMapping pm = new PropertyMapping(property)
{
MappedColumnIndex = index,
MappedColumnName = FirstRowIsHeader ? FieldHeaders[index] : string.Empty
};
_propertyMappings.Add(pm);
}
}
}
private void AutoGeneratePropertyMappingsByName <TRecord>(PropertyInfo[] properties)
{
foreach (var property in properties)
{
int index = Array.FindIndex(FieldHeaders, t => t.Equals(property.Name, StringComparison.InvariantCultureIgnoreCase));
if (index == -1)
{
continue;
}
PropertyMapping pm = new PropertyMapping(property)
{
MappedColumnIndex = index,
MappedColumnName = FieldHeaders[index]
};
_propertyMappings.Add(pm);
}
}