public static string[] ModelToStringArray <T>(T model, string[] headerLine = null) where T : class
{
IList <string> headersList = headerLine?.ToList();
Type type = model.GetType();
PropertyInfo[] props = type.GetProperties();
Dictionary <int, string> dataListDict = new Dictionary <int, string>();
void AddIfNotExists(int key, string value)
{
if (!dataListDict.ContainsKey(key))
{
dataListDict.Add(key, value);
}
}
foreach (var prop in props)
{
if (!((prop.MemberType == MemberTypes.Property || prop.MemberType == MemberTypes.Field) && prop.CanRead))
{
continue;
}
DsvMetaDataAttribute attributeData = prop.GetCustomAttribute <DsvMetaDataAttribute>();
if (attributeData == null)
{
attributeData = new DsvMetaDataAttribute(prop.Name);
}
// If ignored then continue to next
if (attributeData.IsIgnore || attributeData.IsOnlyForRead)
{
continue;
}
DsvDataRecordModel recordModel = new DsvDataRecordModel()
{
Index = attributeData.Index,
Value = prop.GetValue(model)?.ToString(),
HeaderName = attributeData.HeaderName
};
if (headersList == null)
{
if (attributeData.Index < 0)
{
throw new InvalidDsvMetaDataException($"No Dsv Meta Data Index provided or header line provided for `{prop.Name}`");
}
AddIfNotExists(recordModel.Index, recordModel.Value);
}
else
{
if (attributeData.Index >= 0)
{
AddIfNotExists(recordModel.Index, recordModel.Value);
}
else
{
int index = headersList.IndexOf(recordModel.HeaderName);
if (index >= 0)
{
AddIfNotExists(index, recordModel.Value);
}
}
}
}
if (dataListDict.Count == 0)
{
return(null);
}
int length = headersList?.Count ?? dataListDict.Keys.Max() + 1;
string[] dataList = new string[length];
foreach (var data in dataListDict)
{
if (data.Key >= length)
{
throw new InvalidDsvMetaDataException("Invalid meta data, data list exceeds the length of delimeter separated values");
}
dataList[data.Key] = data.Value;
}
return(dataList);
}
public static T StringArrayToModel <T>(T model, string[] dataLine, string[] headerLine = null) where T : class
{
Type type = model.GetType();
PropertyInfo[] props = type.GetProperties();
List <DsvDataRecordModel> dataRecordModels = new List <DsvDataRecordModel>();
foreach (var data in dataLine.Select((value, index) => (value, index)))
{
DsvDataRecordModel recordModel = new DsvDataRecordModel()
{
Index = data.index,
Value = data.value,
HeaderName = headerLine?.ElementAt(data.index)
};
dataRecordModels.Add(recordModel);
}
// Update props
foreach (var prop in props)
{
if (!((prop.MemberType == MemberTypes.Property || prop.MemberType == MemberTypes.Field) && prop.CanWrite))
{
continue;
}
DsvMetaDataAttribute attributeData = prop.GetCustomAttribute <DsvMetaDataAttribute>();
if (attributeData == null)
{
attributeData = new DsvMetaDataAttribute(prop.Name);
}
// If ignored then continue to next
if (attributeData.IsIgnore)
{
continue;
}
// Find data record
DsvDataRecordModel dataRecord = null;
// Find by index
if (attributeData.Index >= 0)
{
dataRecord = dataRecordModels.Find(drms => drms.Index == attributeData.Index);
}
//Find by header or property name
else
{
dataRecord = dataRecordModels.Find(drms => drms.HeaderName == attributeData.HeaderName);
}
// Set property values to the object
if (dataRecord != null)
{
TypeConverter converter = TypeDescriptor.GetConverter(prop.PropertyType);
if (converter != null && converter.IsValid(dataRecord.Value))
{
prop.SetValue(model, converter.ConvertFromString(dataRecord.Value));
}
}
}
return(model);
}
