C# 如何通过反射将字符串指定给整数字段
这就是让我伤心的代码:C# 如何通过反射将字符串指定给整数字段,c#,C#,这就是让我伤心的代码: private static void AssignId(object entity, string id) { var idFieldInfo = entity.GetType().GetProperties().SingleOrDefault(it => it.GetCustomAttributes(typeof(KeyAttribute), false).Any()); if (idFieldIn
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);
}
}
}
是否有一种更智能的方法来分配与整数对应的字符串值您可以使用
Convert.ChangeType
if (idFieldInfo != null)
{
var type = idFieldInfo.PropertyType;
idFieldInfo.SetValue(entity, Convert.ChangeType(id, type), null);
}
请检查,它比ChangeType
涵盖的目标类型范围更广,但是您可以自己解析字符串。可能是字符串的重复