object ReadField(FieldInfo fi, ExcelToObjectAttribute attr)
{
string tablePath = fi.Name;
if (attr != null && attr.TablePath != null)
{
tablePath = attr.TablePath;
}
Type fieldType = fi.FieldType;
if (fieldType.Name == "List`1")
{
Type itemType = fieldType.GetGenericArguments()[0];
return(ReadList(fieldType, tablePath, itemType, attr));
}
else if (fieldType.Name == "Dictionary`2")
{
var subTypes = fieldType.GetGenericArguments();
Type keyType = subTypes[0];
Type valueType = subTypes[1];
return(ReadDictionary(fieldType, tablePath, valueType, attr));
}
else
{
return(ReadSingle(fieldType, tablePath, attr));
}
}
public bool MapInto(object destObj)
{
bool hasError = false;
foreach (var fi in destObj.GetType().GetFields(BindingFlags.Instance | BindingFlags.Public))
{
var attrs = fi.GetCustomAttributes(typeof(ExcelToObjectAttribute), false);
ExcelToObjectAttribute attr = attrs.Length > 0 ? (ExcelToObjectAttribute)attrs[0] : null;
if (attr != null && attr.Ignore == true)
{
continue;
}
try
{
object fieldValue = ReadField(fi, attr);
fi.SetValue(destObj, fieldValue);
}
catch (Exception)
{
hasError = true;
}
}
return(!hasError);
}
public void MapInto(object destObj)
{
StringBuilder error = null;
foreach (var fi in destObj.GetType().GetFields(BindingFlags.Instance | BindingFlags.Public))
{
var attrs = fi.GetCustomAttributes(typeof(ExcelToObjectAttribute), false);
ExcelToObjectAttribute attr = attrs.Length > 0 ? (ExcelToObjectAttribute)attrs[0] : ExcelToObjectAttribute.Default;
if (attr.Ignore == true)
{
continue;
}
try
{
string tableName = fi.Name;
if (attr.TableName != null)
{
tableName = attr.TableName;
}
if (attr.MapInto)
{
// recursively map into sub-object
object subObj = Util.New(fi.FieldType);
MapInto(subObj);
fi.SetValue(destObj, subObj);
}
else
{
var table = this[tableName];
if (table != null)
{
object fieldValue = table.ReadField(fi, attr.DictionaryKeyName);
fi.SetValue(destObj, fieldValue);
}
}
}
catch (Exception ex)
{
if (error == null)
{
error = new StringBuilder();
}
error.AppendFormat("[{0}:{1}] ", fi.Name, ex.Message);
}
}
if (error != null)
{
throw new Exception(error.ToString());
}
}
object ReadList(Type listType, string tablePath, Type itemType, ExcelToObjectAttribute attr)
{
object listObj = Util.New(listType);
var context = new ExcelReader.ReadContext();
bool retn = mReader.ReadListInternal(tablePath, itemType, context, listObj as IList);
return(retn ? listObj : null);
}
object ReadSingle(Type itemType, string tablePath, ExcelToObjectAttribute attr)
{
List <object> listObj = new List <object>();
var context = new ExcelReader.ReadContext()
{
readMaxRows = 1
};
bool retn = mReader.ReadListInternal(tablePath, itemType, context, listObj);
return(retn ? listObj[0] : null);
}
object ReadDictionary(Type dicType, string tablePath, Type valueType, ExcelToObjectAttribute attr)
{
object dicObj = Util.New(dicType);
var context = new ExcelReader.ReadContext();
ExcelReader.KeySelector keySelector = null;
if (attr != null && attr.DictionaryKeyName.IsValid())
{
keySelector = ExcelReader.KeySelector.From(valueType, attr.DictionaryKeyName);
}
bool retn = mReader.ReadDictionaryInternal(tablePath, valueType, context, dicObj as IDictionary, keySelector);
return(retn ? dicObj : null);
}
