if      (fi.FieldType.Name == "Int16")   bw.Write((Int16)fi.GetValue(obj));
else if (fi.FieldType.Name == "UInt16")  bw.Write((UInt16)fi.GetValue(obj));
else if (fi.FieldType.Name == "Int32")   bw.Write((Int32)fi.GetValue(obj));
else if (fi.FieldType.Name == "UInt32")  bw.Write((UInt32)fi.GetValue(obj));
else if (fi.FieldType.Name == "Int64")   bw.Write((Int64)fi.GetValue(obj));
else if (fi.FieldType.Name == "UInt64")  bw.Write((UInt64)fi.GetValue(obj));
else if (fi.FieldType.Name == "Single")  bw.Write((float)fi.GetValue(obj));
else if (fi.FieldType.Name == "Double")  bw.Write((double)fi.GetValue(obj));
else if (fi.FieldType.Name == "Decimal") bw.Write((decimal)fi.GetValue(obj));
else if (fi.FieldType.Name == "Byte")    bw.Write((byte)fi.GetValue(obj));
else if (fi.FieldType.Name == "SByte")   bw.Write((sbyte)fi.GetValue(obj));
else if (fi.FieldType.Name == "String")  bw.Write((string)fi.GetValue(obj));

显然这是丑陋的,当我想对这些类型的数组做同样的事情时,它变得更加难看.

如果我可以做这样的事情,那将是非常好的：

bw.Write( (fi.FieldType) fi.GetValue(obj) );

然后为数组做类似的事情.

有任何想法吗？

解决方法

public static void WriteField(BinaryWriter bw,object obj,FieldInfo fieldInfo)
{
    typeof(BinaryWriter)
        .GetMethod("Write",new Type[] { fieldInfo.FieldType })
        .Invoke(bw,new object[] { fieldInfo.GetValue(obj) });
}

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