4
所以这是一个让我伤心的代码:如何通过反射一个字符串赋值给一个整数字段
private static void AssignId(object entity, string id)
{
var idFieldInfo = entity.GetType().GetProperties().SingleOrDefault(it => it.GetCustomAttributes(typeof(KeyAttribute), false).Any());
if (idFieldInfo != null)
{
var type = idFieldInfo.PropertyType;
if (type == typeof(byte))
{
idFieldInfo.SetValue(entity, Convert.ToByte(id), null);
}
else if (type == typeof(short))
{
idFieldInfo.SetValue(entity, Convert.ToInt16(id), null);
}
else if (type == typeof(int))
{
idFieldInfo.SetValue(entity, Convert.ToInt32(id), null);
}
else if (type == typeof(long))
{
idFieldInfo.SetValue(entity, Convert.ToInt64(id), null);
}
else if (type == typeof(sbyte))
{
idFieldInfo.SetValue(entity, Convert.ToSByte(id), null);
}
else if (type == typeof(ushort))
{
idFieldInfo.SetValue(entity, Convert.ToUInt16(id), null);
}
else if (type == typeof(uint))
{
idFieldInfo.SetValue(entity, Convert.ToUInt32(id), null);
}
else if (type == typeof(ulong))
{
idFieldInfo.SetValue(entity, Convert.ToUInt64(id), null);
}
}
}
是否有分配相应的整数
退房[本文](http://www.codeproject.com/Articles/61460/Using-LINQ-for-type-conversion),它覆盖除了'一changeType更宽范围的目标类型的',但你会解析str你自己的弦乐。 – dasblinkenlight 2012-04-27 09:52:45
[通过字符串值反射设置属性]的可能重复(https://stackoverflow.com/questions/1089123/setting-a-property-by-reflection-with-a-string-value) – 2017-07-24 11:50:19