需要用C#编写的RPC调用示例

Question

我正在处理 WMI 连接错误和超时，并将首先尝试检查 RPC 堆栈。我找到了以下 C 代码片段，但不明白它是否以及如何工作以及在哪里可以找到更多信息甚至示例。

RPC_STATUS status;
unsigned short *StringBinding;
RPC_BINDING_HANDLE BindingHandle;
status = RpcStringBindingCompose
  (
    NULL,                // Object UUID
    L"ncacn_ip_tcp",      // Protocol sequence to use
    L"MyServer.MyCompany.com", // Server DNS or Netbios Name
    NULL,
    NULL,
    &StringBinding
  );
// Error checking ommitted. If no error, we proceed below
status = RpcBindingFromStringBinding(StringBinding, &BindingHandle);

// free string regardless of errors from RpcBindingFromStringBinding
RpcStringFree(&StringBinding);

这段代码真的能建立联系吗？ 有人有 C# 的互操作声明吗？

到目前为止谢谢。

br--马布拉

Answer 1

这是上面示例的互操作代码：

class Rpc
{
    [DllImport("Rpcrt4.dll", CharSet = CharSet.Auto)]
    public static extern int RpcStringBindingCompose(
        string ObjUuid,
        string ProtSeq,
        string NetworkAddr,
        string EndPoint,
        string Options,
        out string StringBinding);

    [DllImport("Rpcrt4.dll", CharSet = CharSet.Auto)]
    public static extern int RpcBindingFromStringBinding(
        string StringBinding,
        out IntPtr Binding);

    [DllImport("Rpcrt4.dll", CharSet = CharSet.Auto)]
    public static extern int RpcBindingFree(
        ref IntPtr Binding);

    public Rpc()
    {
        string stringBinding = null;

        int retCode = RpcStringBindingCompose(
             null,                // Object UUID
             "ncacn_ip_tcp",      // Protocol sequence to use
             "MyServer.MyCompany.com", // Server DNS or Netbios Name
             null,
             null,
             out stringBinding );

        IntPtr bindingHandle = IntPtr.Zero;
        retCode = RpcBindingFromStringBinding(stringBinding, out bindingHandle);

        retCode = RpcBindingFree(ref bindingHandle);
    }
}