C# 数据类型转换工具类

public static class DataFormatHelper
{
    
    
    public static int ToInt(this object val, int defVal = default(int))
    {
    
    
        return val.To<int>(defVal);
    }


    /// <summary>
            /// 通用类型转换
            /// </summary>
            /// <typeparam name="T"></typeparam>
            /// <param name="val"></param>
            /// <param name="defVal"></param>
            /// <returns></returns>
    public static T To<T>(this object val, T defVal = default(T))
    {
    
    
        if (val == null)
            return (T)defVal;
        if (val is T)
            return (T)val;
        if (val is DBNull)
            return (T)defVal;


        Type type = typeof(T);
        try
        {
    
    
            if (type.BaseType == typeof(Enum))
            {
    
    
                return (T)Enum.Parse(type, val.ToString(), true);
            }
            else
            {
    
    
                return (T)Convert.ChangeType(val, type);
            }
        }
        catch
        {
    
    
            return defVal;
        }
    }
}