Question

C# 调用带 out 参数 读取返回值问题

这是接口文档
我调用这个方法 怎么去2 - 8那些返回值
我的代码如下
[DllImport("XNHInterface.dll")]

static extern int getPersonInfo(string personNo, string flag, string name, string sex, string birthday, string idCard, string hMaster, string errorMsg);

private void button3_Click(object sender, EventArgs e)
{
string personNo = "220382010799000101";
string flag = "";
string name = "";
string sex = "";
string birthday = "";
string idCard = "";
string hMaster = "";
string errorMsg = "";
int i = getPersonInfo(personNo, flag, name, sex, birthday, idCard, hMaster, errorMsg);
}

Answer 1

// Try:
[DllImport("XNHInterface.dll"", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
static extern int getPersonInfo(string personNo, string flag, string name, string sex, string birthday, string idCard, string hMaster, string errorMsg);

// call:
int i = getPersonInfo(out personNo,out flag,out name,out sex,out birthday,out idCard,out hMaster,out errorMsg);

Answer 2

int i = getPersonInfo(personNo,out flag, out name,out sex,out birthday,out idCard,out hMaster, out errorMsg);