C＃ToCharArray不适用于char *

Question

我有以下结构：

[StructLayout(LayoutKind.Sequential, Pack = 1, CharSet = CharSet.Unicode)]
unsafe public struct Attributes
{

    public OrderCommand Command { get; set; }

    public int RefID { get; set; }

    public fixed char MarketSymbol[30];
}

现在，我想将字符写入MarketSymbol字段：

string symbol = "test";
Attributes.MarketSymbol = symbol.ToCharArray();

编译器抛出一个错误，说它无法从char []转换为char *。 我该怎么写呢？ 感谢

Answer 1

像这样：

[StructLayout(LayoutKind.Sequential, Pack = 1, CharSet = CharSet.Unicode)]
public struct Attributes
{
    public OrderCommand Command { get; set; }
    public int RefID { get; set; }
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 30)]
    public string MarketSymbol;
}

注意pack = 1，这很不寻常。如果这与C代码互操作，CharSet.Ansi的赔率很高。