public static List <Result> Parameters <T, Result>(T item, Expression <Func <T, object> > field) where Result : class, new()
{
if (typeof(Result).BaseType != typeof(DbParameter))
{
throw new Exception("Result type error is not DbParameter");
}
var result = new List <Result>();
var dyn = new DynamicGet <T>();
var dynResult = new DynamicSet <Result>();
var dic = new Dictionary <string, object>();
var name = (field.Body as NewExpression).Members.ToList();
var value = (field.Body as NewExpression).Arguments.ToList();
for (var i = 0; i < name.Count; i++)
{
dic.Add(name[i].Name, value[i]);
}
dic.ToList().ForEach(a =>
{
var param = new Result();
dynResult.SetValue(param, "ParameterName", a.Key, true);
if (a.Value is ConstantExpression)
{
dynResult.SetValue(param, "Value", (a.Value as ConstantExpression).Value, true);
}
else if (a.Value is MethodCallExpression)
{
dynResult.SetValue(param, "Value", Expression.Lambda((a.Value as MethodCallExpression).ReduceExtensions().Reduce()).Compile().DynamicInvoke().ToString(), true);
}
else if (a.Value is MemberExpression)
{
if ((a.Value as MemberExpression).Expression is ParameterExpression)
{
dynResult.SetValue(param, "Value", dyn.GetValue(item, (a.Value as MemberExpression).Member.Name, true), true);
}
else
{
dynResult.SetValue(param, "Value", Expression.Lambda(a.Value as MemberExpression).Compile().DynamicInvoke(), true);
}
}
else
{
dynResult.SetValue(param, "Value", dyn.GetValue(item, a.Value.ToStr(), true), true);
}
result.Add(param);
});
return(result);
}
/// <summary>
/// dic to T
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="item"></param>
/// <returns></returns>
public static T DicToModel <T>(Dictionary <string, object> dic, bool isCache = true) where T : class, new()
{
var result = new T();
var info = new DynamicSet <T>();
PropertyInfo <T>(isCache).ForEach(a => {
if (dic.ContainsKey(a.Name.ToLower()) && !string.IsNullOrEmpty(dic[a.Name.ToLower()].ToStr()))
{
info.SetValue(result, a.Name, Convert.ChangeType(dic[a.Name.ToLower()], a.PropertyType), isCache);
}
});
return(result);
}
/// <summary>
/// 对象映射
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="model"></param>
/// <returns></returns>
public static T CopyModel <T, T1>(T1 model, Expression <Func <T1, object> > field = null) where T : class, new()
{
var result = new T();
var dynGet = new DynamicGet <T1>();
var dynSet = new DynamicSet <T>();
var list = BaseDic.PropertyInfo <T>();
var dic = new Dictionary <MemberInfo, Expression>();
if (field != null)
{
var name = (field.Body as NewExpression).Members.ToList();
var value = (field.Body as NewExpression).Arguments.ToList();
for (var i = 0; i < name.Count; i++)
{
dic.Add(name[i], value[i]);
}
}
BaseDic.PropertyInfo <T1>().ForEach(m => {
if (list.Exists(a => a.Name.ToLower() == m.Name.ToLower()))
{
var property = list.Find(a => a.Name.ToLower() == m.Name.ToLower());
var isList = m.PropertyType.GetGenericArguments().Length > 0;
var isLeafSystemType = isList && m.PropertyType.GetGenericArguments()[0].FullName.StartsWith("System.");
var isSystemType = m.PropertyType.FullName.StartsWith("System.");
if (isList && !isLeafSystemType)
{
var leafList = Activator.CreateInstance(typeof(List <>).MakeGenericType(property.PropertyType.GetGenericArguments()[0]));
var tempList = Convert.ChangeType(dynGet.GetValue(model, m.Name, true), m.PropertyType) as IEnumerable;
if (tempList != null)
{
foreach (var temp in tempList)
{
var leafModel = Activator.CreateInstance(property.PropertyType.GetGenericArguments()[0]);
var propertyList = leafModel.GetType().GetProperties().ToList();
temp.GetType().GetProperties().ToList().ForEach(p =>
{
if (propertyList.Exists(a => a.Name == p.Name))
{
var tempProperty = propertyList.Find(a => a.Name.ToLower() == p.Name.ToLower());
tempProperty.SetValue(leafModel, p.GetValue(temp));
}
});
var method = leafList.GetType().GetMethod("Add", BindingFlags.Instance | BindingFlags.Public);
method.Invoke(leafList, new object[] { leafModel });
}
dynSet.SetValue(result, property.Name, leafList, true);
}
}
else if (isSystemType)
{
if (m.PropertyType.Name == "Nullable`1" && m.PropertyType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
dynSet.SetValue(result, property.Name, dynGet.GetValue(model, m.Name, true), true);
}
else
{
dynSet.SetValue(result, property.Name, Convert.ChangeType(dynGet.GetValue(model, m.Name, true), m.PropertyType), true);
}
}
else
{
var tempModel = Convert.ChangeType(dynGet.GetValue(model, m.Name, true), m.PropertyType);
var leafModel = Activator.CreateInstance(property.PropertyType);
var propertyList = (property.PropertyType as TypeInfo).GetProperties().ToList();
(m.PropertyType as TypeInfo).GetProperties().ToList().ForEach(p =>
{
if (propertyList.Exists(a => a.Name == p.Name))
{
var temp = propertyList.Find(a => a.Name.ToLower() == p.Name.ToLower());
temp.SetValue(leafModel, p.GetValue(tempModel));
}
});
dynSet.SetValue(result, property.Name, leafModel, true);
}
}
else
{
if (dic.ToList().Exists(n => (n.Value as MemberExpression).Member.Name.ToLower() == m.Name.ToLower()))
{
var temp = dic.ToList().Find(n => (n.Value as MemberExpression).Member.Name.ToLower() == m.Name.ToLower());
if (m.Name == "Nullable`1" && temp.Key.DeclaringType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
dynSet.SetValue(result, temp.Key.Name, dynGet.GetValue(model, (temp.Value as MemberExpression).Member.Name, true), true);
}
else
{
dynSet.SetValue(result, temp.Key.Name, Convert.ChangeType(dynGet.GetValue(model, (temp.Value as MemberExpression).Member.Name, true), m.PropertyType), true);
}
}
}
});
return(result);
}
