Parse any Object Model into Anything [closed]

问题

In my .NET project, I want an extension method or library to parse any object model into anything. This is a very important issue for me.

回答1:

this Is Extention Method In My Framework Library. It's a Perfect Method.

Code

public static class GenericExtensions
{
#region ParseTo

    public static TOut ParseTo<TInput, TOut>(this TInput tInput)
    {
        TOut tOut = (TOut)Activator.CreateInstance(typeof(TOut));
        return ParseTo(tInput, tOut);
    }

    public static TOut ParseTo<TInput, TOut>(this TInput tInput, TOut tOut)
    {
        Type type = tInput.GetType();
        PropertyInfo[] properties = tOut.GetType().GetProperties();

        for (int i = 0; i < (int)properties.Length; i++)
        {
            PropertyInfo propertyInfo = properties[i];
            PropertyInfo property = type.GetProperty(propertyInfo.Name);
            if (property != null)
            {
                try
                {
                    propertyInfo.SetValue(tOut, property.GetValue(tInput, null), null);
                }
                catch
                {
                }
            }
            else if (propertyInfo.Name.Contains("_"))
            {
                propertyInfo.SetValue(tOut, HelperGetPropValue(propertyInfo.Name, tInput), null);
            }
        }

        return tOut;
    }

    public static List<TOut> ParseTo<TInput, TOut>(this IEnumerable<TInput> list)
    {
        List<TOut> result = new List<TOut>();

        PropertyInfo[] properties = typeof(TOut).GetProperties();

        Dictionary<string, PropertyInfo> strs = new Dictionary<string, PropertyInfo>();
        PropertyInfo[] propertyInfoArray = typeof(TInput).GetProperties();

        for (int i = 0; i < propertyInfoArray.Length; i++)
        {
            PropertyInfo propertyInfo = propertyInfoArray[i];
            strs.Add(propertyInfo.Name, propertyInfo);
        }

        foreach (TInput tInput in list)
        {
            TOut tOut = (TOut)Activator.CreateInstance(typeof(TOut));
            PropertyInfo[] propertyInfoArray1 = properties;
            for (int j = 0; j < propertyInfoArray1.Length; j++)
            {
                PropertyInfo propertyInfo1 = propertyInfoArray1[j];
                try
                {
                    if (strs.ContainsKey(propertyInfo1.Name))
                    {
                        propertyInfo1.SetValue(tOut, strs[propertyInfo1.Name].GetValue(tInput, null), null);
                    }
                    else if (propertyInfo1.Name.Contains("_"))
                    {
                        propertyInfo1.SetValue(tOut, HelperGetPropValue(propertyInfo1.Name, tInput), null);
                    }
                }
                catch
                {
                }
            }
            result.Add(tOut);
        }

        return result;
    }

    public static object HelperGetPropValue(string name, object obj)
    {
        object value;
        string[] strArrays = name.Split(new char[] { '\u005F' });
        if (obj != null)
        {
            PropertyInfo property = obj.GetType().GetProperty(strArrays[0]);
            if (property != null)
            {
                object value1 = property.GetValue(obj, null);
                try
                {
                    value = value1.GetType().GetProperty(strArrays[1]).GetValue(value1, null);
                }
                catch
                {
                    value = string.Empty;
                }
            }
            else
            {
                value = null;
            }
        }
        else
        {
            value = null;
        }
        return value;
    }

    #endregion
}

Sample =>

Definition

public ModelClass 
{
    public int id {get; set;}
    public int firstname {get; set;}
    public int lastname {get; set;}
}

public ViewModelClass 
{
    public int id {get; set;}
    public int firstname {get; set;}
}

Usage

ModelClass model=new ModelClass(){
    id=1,
    firstname = "ali",
    lastname = "mahmoody",
};

var viewModel = model.ParseTo(new ViewModelClass());

来源：https://stackoverflow.com/questions/58039766/parse-any-object-model-into-anything

标签

.net

linq

extension-methods