C# 创建我自己的映射器
这就是我的情况。我有两个班,TmdbTvShow和TvShow TmdbTvShow是一个充满了我从外部源获得的数据的类。现在我想创建一个映射器,将它映射到我自己的类TvShow 班级电视节目:C# 创建我自己的映射器,c#,generics,mapping,ienumerable,C#,Generics,Mapping,Ienumerable,这就是我的情况。我有两个班,TmdbTvShow和TvShow TmdbTvShow是一个充满了我从外部源获得的数据的类。现在我想创建一个映射器,将它映射到我自己的类TvShow 班级电视节目: [MovieMap("TmdbTvShow")] public class TvShow { public int ID { get; set; } [MovieMapProperty("ID")] public int TmdbID { get; set; } [M
[MovieMap("TmdbTvShow")]
public class TvShow
{
public int ID { get; set; }
[MovieMapProperty("ID")]
public int TmdbID { get; set; }
[MovieMapProperty("Name")]
public string Name { get; set; }
[MovieMapProperty("OriginalName")]
public string OriginalName { get; set; }
[MovieMapProperty("Overview")]
public string Summary { get; set; }
[MovieMapProperty("FirstAirDate")]
public DateTime FirstAirDate { get; set; }
[MovieMapProperty("LastAirDate")]
public DateTime LastAirDate { get; set; }
[MovieMapProperty("Genres")]
public IEnumerable<Genre> Genres { get; set; }
[MovieMapProperty("InProduction")]
public bool Running { get; set; }
}
也许有人能帮我找到正确的方向来处理这件事
Cheers您可以创建一个列表,它是一个
IEnumerable
,将项目添加到列表中,然后将其分配给属性
如果需要将对象从TmdbGenre
转换为Genre
,可以递归调用Map
,但可能需要接受类型参数的Map
版本
public object Map(Type type, object input);
var result = value.Select(x => Map(prop.GetType().GetGenericArguments()[0], x));
prop.SetValue(obj, result);
好吧,经过很多尝试,我终于明白了 以下是我的解决方案:
public T Map<T>(object input) where T : new()
{
T obj = new T();
MovieMapAttribute[] classAttributes = (MovieMapAttribute[])obj.GetType().GetCustomAttributes(typeof(MovieMapAttribute), false);
if (classAttributes != null && classAttributes[0].ClassName.Equals(input.GetType().Name))
{
Dictionary<string, MovieMapPropertyAttribute> propAtts = new Dictionary<string, MovieMapPropertyAttribute>();
foreach (PropertyInfo prop in obj.GetType().GetProperties())
{
MovieMapPropertyAttribute[] mma = (MovieMapPropertyAttribute[])prop.GetCustomAttributes(typeof(MovieMapPropertyAttribute), false);
// Attribute found
if (mma.Length > 0)
{
// Get attribute
MovieMapPropertyAttribute mmp = mma[0];
if (input.GetType().GetProperty(mmp.PropertyName) != null)
{
// Get value
var value = input.GetType().GetProperty(mmp.PropertyName).GetValue(input, null);
// Is property a dateTime
if (typeof(DateTime).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, Convert.ToDateTime(value), null);
}
else if (typeof(IEnumerable).IsAssignableFrom(prop.PropertyType) && prop.PropertyType != typeof(string) && prop.PropertyType != typeof(string[]))
{
Type type = prop.PropertyType.GetGenericArguments()[0];
var list = (IEnumerable)value;
dynamic values = Activator.CreateInstance(typeof(List<>).MakeGenericType(type));
foreach (object ob in list)
{
object tempObj = Activator.CreateInstance(type);
tempObj = Map(ob, tempObj);
values.Add((dynamic)tempObj);
}
obj.GetType().GetProperty(prop.Name).SetValue(obj, values, null);
}
else if (typeof(Boolean).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, Convert.ToBoolean(value), null);
}
else if (typeof(int).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, Convert.ToInt32(value), null);
}
else if (typeof(float).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, float.Parse(value.ToString(), System.Globalization.CultureInfo.InvariantCulture.NumberFormat), null);
}
else
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, value, null);
}
}
}
}
}
else
throw new Exception("Wrong object");
return obj;
}
private object Map(object input, object output)
{
MovieMapAttribute[] classAttributes = (MovieMapAttribute[])output.GetType().GetCustomAttributes(typeof(MovieMapAttribute), false);
if (classAttributes != null && classAttributes[0].ClassName.Equals(input.GetType().Name))
{
foreach (PropertyInfo prop in output.GetType().GetProperties())
{
MovieMapPropertyAttribute[] mma = (MovieMapPropertyAttribute[])prop.GetCustomAttributes(typeof(MovieMapPropertyAttribute), false);
// Attribute found
if (mma.Length > 0)
{
// Get attribute
MovieMapPropertyAttribute mmp = mma[0];
if (input.GetType().GetProperty(mmp.PropertyName) != null)
{
var value = input.GetType().GetProperty(mmp.PropertyName).GetValue(input, null);
// Is property a dateTime
if (typeof(DateTime).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, Convert.ToDateTime(value), null);
}
else if (typeof(IEnumerable).IsAssignableFrom(prop.PropertyType) && prop.PropertyType != typeof(string) && prop.PropertyType != typeof(string[]))
{
Type type = prop.PropertyType.GetGenericArguments()[0];
var list = (IEnumerable)value;
dynamic values = Activator.CreateInstance(typeof(List<>).MakeGenericType(type));
foreach (object ob in list)
{
object tempObj = Activator.CreateInstance(type);
tempObj = Map(ob, tempObj);
values.Add((dynamic)tempObj);
}
output.GetType().GetProperty(prop.Name).SetValue(output, values, null);
}
else if (typeof(Boolean).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, Convert.ToBoolean(value), null);
}
else if (typeof(int).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, Convert.ToInt32(value), null);
}
else if (typeof(float).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, float.Parse(value.ToString(), System.Globalization.CultureInfo.InvariantCulture.NumberFormat), null);
}
else
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, value, null);
}
}
}
}
}
else
throw new Exception("Wrong object");
return output;
}
publictmap(对象输入),其中T:new()
{
T obj=新的T();
MovieMapAttribute[]classAttributes=(MovieMapAttribute[])obj.GetType().GetCustomAttributes(typeof(MovieMapAttribute),false);
if(classAttributes!=null&&classAttributes[0].ClassName.Equals(input.GetType().Name))
{
Dictionary propAtts=新字典();
foreach(obj.GetType().GetProperties()中的PropertyInfo属性)
{
MovieMapPropertyAttribute[]mma=(MovieMapPropertyAttribute[])prop.GetCustomAttributes(typeof(MovieMapPropertyAttribute),false);
//找到属性
如果(mma.Length>0)
{
//获取属性
MovieMapPropertyAttribute mmp=mma[0];
if(input.GetType().GetProperty(mmp.PropertyName)!=null)
{
//获得价值
var value=input.GetType().GetProperty(mmp.PropertyName).GetValue(input,null);
//属性是日期时间吗
if(typeof(DateTime).IsAssignableFrom(prop.PropertyType))
{
//将值设置为对象
obj.GetType().GetProperty(prop.Name).SetValue(obj,Convert.ToDateTime(value),null);
}
else if(typeof(IEnumerable).IsAssignableFrom(prop.PropertyType)&&prop.PropertyType!=typeof(string)&&prop.PropertyType!=typeof(string[]))
{
Type Type=prop.PropertyType.GetGenericArguments()[0];
变量列表=(IEnumerable)值;
动态值=Activator.CreateInstance(typeof(List).MakeGenericType(type));
foreach(列表中的对象对象对象)
{
对象tempObj=Activator.CreateInstance(类型);
tempObj=Map(ob,tempObj);
添加((动态)tempObj);
}
obj.GetType().GetProperty(prop.Name).SetValue(obj,value,null);
}
else if(typeof(Boolean).IsAssignableFrom(prop.PropertyType))
{
//将值设置为对象
obj.GetType().GetProperty(prop.Name).SetValue(obj,Convert.ToBoolean(value),null);
}
else if(typeof(int).IsAssignableFrom(prop.PropertyType))
{
//将值设置为对象
obj.GetType().GetProperty(prop.Name).SetValue(obj,Convert.ToInt32(value),null);
}
else if(typeof(float).IsAssignableFrom(prop.PropertyType))
{
//将值设置为对象
obj.GetType().GetProperty(prop.Name).SetValue(obj,float.Parse(value.ToString(),System.Globalization.CultureInfo.InvariantCulture.NumberFormat),null);
}
其他的
{
//将值设置为对象
obj.GetType().GetProperty(prop.Name).SetValue(obj,value,null);
}
}
}
}
}
其他的
抛出新异常(“错误对象”);
返回obj;
}
私有对象映射(对象输入、对象输出)
{
MovieMapAttribute[]classAttributes=(MovieMapAttribute[])output.GetType().GetCustomAttributes(typeof(MovieMapAttribute),false);
if(classAttributes!=null&&classAttributes[0].ClassName.Equals(input.GetType().Name))
{
foreach(output.GetType().GetProperties()中的PropertyInfo属性)
{
MovieMapPropertyAttribute[]mma=(MovieMapPropertyAttribute[])prop.GetCustomAttributes(typeof(MovieMapPropertyAttribute),false);
//找到属性
如果(mma.Length>0)
{
//获取属性
MovieMapPropertyAttribute mmp=mma[0];
if(input.GetType().GetProperty(mmp.PropertyName)!=null)
{
var value=input.GetType().GetProperty(mmp.PropertyName).GetValue(input,null);
//属性是日期时间吗
if(typeof(DateTime).IsAssignableFrom(prop.PropertyType))
{
//将值设置为对象
output.GetType().GetProperty(prop.Name).SetValue(output,Convert.ToDateTime(value),null);
}
else if(typeof(IEnumerable).IsAssignableFrom(prop.PropertyType)&&prop.PropertyType!=typeof(string)&&prop.PropertyType!=typeof(string[]))
{
Type Type=prop.PropertyType.GetGenericArguments()[0];
public object Map(Type type, object input);
var result = value.Select(x => Map(prop.GetType().GetGenericArguments()[0], x));
prop.SetValue(obj, result);
public T Map<T>(object input) where T : new()
{
T obj = new T();
MovieMapAttribute[] classAttributes = (MovieMapAttribute[])obj.GetType().GetCustomAttributes(typeof(MovieMapAttribute), false);
if (classAttributes != null && classAttributes[0].ClassName.Equals(input.GetType().Name))
{
Dictionary<string, MovieMapPropertyAttribute> propAtts = new Dictionary<string, MovieMapPropertyAttribute>();
foreach (PropertyInfo prop in obj.GetType().GetProperties())
{
MovieMapPropertyAttribute[] mma = (MovieMapPropertyAttribute[])prop.GetCustomAttributes(typeof(MovieMapPropertyAttribute), false);
// Attribute found
if (mma.Length > 0)
{
// Get attribute
MovieMapPropertyAttribute mmp = mma[0];
if (input.GetType().GetProperty(mmp.PropertyName) != null)
{
// Get value
var value = input.GetType().GetProperty(mmp.PropertyName).GetValue(input, null);
// Is property a dateTime
if (typeof(DateTime).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, Convert.ToDateTime(value), null);
}
else if (typeof(IEnumerable).IsAssignableFrom(prop.PropertyType) && prop.PropertyType != typeof(string) && prop.PropertyType != typeof(string[]))
{
Type type = prop.PropertyType.GetGenericArguments()[0];
var list = (IEnumerable)value;
dynamic values = Activator.CreateInstance(typeof(List<>).MakeGenericType(type));
foreach (object ob in list)
{
object tempObj = Activator.CreateInstance(type);
tempObj = Map(ob, tempObj);
values.Add((dynamic)tempObj);
}
obj.GetType().GetProperty(prop.Name).SetValue(obj, values, null);
}
else if (typeof(Boolean).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, Convert.ToBoolean(value), null);
}
else if (typeof(int).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, Convert.ToInt32(value), null);
}
else if (typeof(float).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, float.Parse(value.ToString(), System.Globalization.CultureInfo.InvariantCulture.NumberFormat), null);
}
else
{
// Set value to object
obj.GetType().GetProperty(prop.Name).SetValue(obj, value, null);
}
}
}
}
}
else
throw new Exception("Wrong object");
return obj;
}
private object Map(object input, object output)
{
MovieMapAttribute[] classAttributes = (MovieMapAttribute[])output.GetType().GetCustomAttributes(typeof(MovieMapAttribute), false);
if (classAttributes != null && classAttributes[0].ClassName.Equals(input.GetType().Name))
{
foreach (PropertyInfo prop in output.GetType().GetProperties())
{
MovieMapPropertyAttribute[] mma = (MovieMapPropertyAttribute[])prop.GetCustomAttributes(typeof(MovieMapPropertyAttribute), false);
// Attribute found
if (mma.Length > 0)
{
// Get attribute
MovieMapPropertyAttribute mmp = mma[0];
if (input.GetType().GetProperty(mmp.PropertyName) != null)
{
var value = input.GetType().GetProperty(mmp.PropertyName).GetValue(input, null);
// Is property a dateTime
if (typeof(DateTime).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, Convert.ToDateTime(value), null);
}
else if (typeof(IEnumerable).IsAssignableFrom(prop.PropertyType) && prop.PropertyType != typeof(string) && prop.PropertyType != typeof(string[]))
{
Type type = prop.PropertyType.GetGenericArguments()[0];
var list = (IEnumerable)value;
dynamic values = Activator.CreateInstance(typeof(List<>).MakeGenericType(type));
foreach (object ob in list)
{
object tempObj = Activator.CreateInstance(type);
tempObj = Map(ob, tempObj);
values.Add((dynamic)tempObj);
}
output.GetType().GetProperty(prop.Name).SetValue(output, values, null);
}
else if (typeof(Boolean).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, Convert.ToBoolean(value), null);
}
else if (typeof(int).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, Convert.ToInt32(value), null);
}
else if (typeof(float).IsAssignableFrom(prop.PropertyType))
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, float.Parse(value.ToString(), System.Globalization.CultureInfo.InvariantCulture.NumberFormat), null);
}
else
{
// Set value to object
output.GetType().GetProperty(prop.Name).SetValue(output, value, null);
}
}
}
}
}
else
throw new Exception("Wrong object");
return output;
}