public static void CopyDeepDataItem <S, T>(this T target, S source, Expression <Func <T, object> > expressKey = null)
{
foreach (var sourceProperty in source.GetType().GetProperties())
{
PropertyInfo item = target.GetType().GetProperty(sourceProperty.Name);
if (item != null && item.DeclaringType.Equals(target.GetType()))
{
item.SetValue(target, SafeConverter.SafeToObject(item.PropertyType, sourceProperty.GetValue(source, null)), null);
}
}
}
public static void CopyDataItem <S, T>(this T target, S source, List <string> skipNames)
{
foreach (var sourceProperty in source.GetType().GetProperties())
{
if (skipNames.Contains(sourceProperty.Name))
{
continue;
}
PropertyInfo item = target.GetType().GetProperty(sourceProperty.Name);
if (sourceProperty.DeclaringType.Equals(source.GetType()) && item != null)
{
item.SetValue(target, SafeConverter.SafeToObject(item.PropertyType, sourceProperty.GetValue(source, null)), null);
}
}
}
/// <summary>
/// 根据 直接 表达式 转换成 Lambda 表达式
/// </summary>
/// <typeparam name="T">表达式方法类型</typeparam>
/// <param name="propertyName">字段名</param>
/// <param name="propertyValue">比较值</param>
/// <param name="expression">直接表达式</param>
/// <returns></returns>
public static Expression <Func <T, bool> > GetExpressionByString <T>(string propertyName, object propertyValue,
string expression)
{
expression = expression.Trim().ToLower();
string value = SafeConverter.SafeToStr(propertyValue);
//转String
if ((value.Length > 1) && (value[0] == '\''))
{
value = value.Substring(1);
if ((value.Length > 1) && (value[value.Length - 1] == '\''))
{
value = value.Substring(0, value.Length - 1);
}
propertyValue = value;
}
//格式化类型
Type type = typeof(T);
PropertyInfo propertyInfo = type.GetProperty(propertyName); //获取指定名称的属性
if (propertyInfo == null)
{
throw new Exception("条件中的字段名不存在，请检查。");
}
propertyValue = SafeConverter.SafeToObject(propertyInfo.PropertyType, propertyValue);
string lambadaExpression = $"{propertyName}{expression}@0";
object[] values = new object[] { propertyValue };
return(System.Linq.Dynamic.DynamicExpression.ParseLambda <T, bool>(lambadaExpression, values));
#region 获取Lambda表达式 - 之前的方法，已删除
//if ((expression == "=") || (expression == "=="))
//{
// return CreateEqual<T>(propertyName, propertyValue);
//}
//else if (expression == "!=")
//{
// return CreateNotEqual<T>(propertyName, propertyValue);
//}
//else if (expression == "like")
//{
// return GetContains<T>(propertyName, propertyValue);
//}
//else if (expression == "notlike")
//{
// return GetNotContains<T>(propertyName, propertyValue);
//}
//else if (expression == ">")
//{
// return CreateGreaterThan<T>(propertyName, propertyValue);
//}
//else if (expression == ">=")
//{
// return CreateGreaterThanOrEqual<T>(propertyName, propertyValue);
//}
//else if (expression == "<")
//{
// return CreateLessThan<T>(propertyName, propertyValue);
//}
//else if (expression == "<=")
//{
// return CreateLessThanOrEqual<T>(propertyName, propertyValue);
//}
//else
//{
// return False<T>();
//}
//#endregion
//#region 获取Lambda表达式
//if ((expression == "=") || (expression == "=="))
//{
// return CreateEqual<T>(propertyName, propertyValue);
//}
//else if (expression == "!=")
//{
// return CreateNotEqual<T>(propertyName, propertyValue);
//}
//else if (expression == "like")
//{
// return GetContains<T>(propertyName, propertyValue);
//}
//else if (expression == "notlike")
//{
// return GetNotContains<T>(propertyName, propertyValue);
//}
//else if (expression == ">")
//{
// return CreateGreaterThan<T>(propertyName, propertyValue);
//}
//else if (expression == ">=")
//{
// return CreateGreaterThanOrEqual<T>(propertyName, propertyValue);
//}
//else if (expression == "<")
//{
// return CreateLessThan<T>(propertyName, propertyValue);
//}
//else if (expression == "<=")
//{
// return CreateLessThanOrEqual<T>(propertyName, propertyValue);
//}
//else
//{
// return False<T>();
//}
#endregion
}
