/// <summary>
/// 获取映射数据
/// </summary>
/// <param name="property">属性信息</param>
/// <returns></returns>
public string GetMappingColumnName(PropertyInfo property)
{
// 获取显示名称
var columnName = string.Empty;
if (NameMapping != null)
{
columnName = NameMapping.GetValueByKey(property.Name);
}
// 从 Attribute 中自动获取对应的列名
if (string.IsNullOrEmpty(columnName) && AutoResolveColumnName)
{
var descriptionAttribute = property.GetAttribute <DescriptionAttribute>();
if (descriptionAttribute == null)
{
var displayAttr = property.GetAttribute <DisplayAttribute>();
if (displayAttr != null)
{
columnName = displayAttr.Name;
}
}
else
{
columnName = descriptionAttribute.Description;
}
}
return(columnName);
}
/// <summary>
/// DataRow 转换成实体
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="row">数据行</param>
/// <param name="errors">错误我</param>
/// <returns></returns>
public T GetEntity(DataRow row, out List <KeyValuePair <string, string> > errors)
{
var entity = new T();
var properties = typeof(T).GetProperties();
errors = new List <KeyValuePair <string, string> >();
var additionalData = GetAdditionalData(row);
// 对实体的每个属性赋值
foreach (var property in properties)
{
var columnName = GetMappingColumnName(property); // 列名
try
{
var value = GetPropertyValue(row, property, additionalData);
var safeValue = ValueHelper.GetSafeValue(value, property.PropertyType);
if (value != null && safeValue != null)
{
property.SetValue(entity, safeValue, null);
}
}
catch (LogicException ex)
{
string key;
if (string.IsNullOrEmpty(ex.Key))
{
key = columnName;
}
else
{
key = NameMapping.GetValueByKey(ex.Key);
if (string.IsNullOrEmpty(key))
{
key = ex.Key;
}
}
var error = new KeyValuePair <string, string>(key, ex.Message);
errors.Add(error);
}
catch (Exception ex)
{
var key = columnName;
var error = new KeyValuePair <string, string>(key, ex.Message);
errors.Add(error);
}
}
return(entity);
}
