DCom/OPC 应用程序在 Visual Studio 中运行时无法连接,但 .exe 连接完美
我正在编写一个连接到远程服务器并读取数据等的 OPC 客户端。我正在使用 advosol 的 BGServer 类。问题是,当我在 Visual Studio 中运行该程序时,在添加组时出现以下错误。
“HRESULT 异常:0x80040202”
我的问题类似于(http://stackoverflow.com/questions/5978721/opc-server-access-remotely-using-opcda-net-tools),但是,我知道 DCom 设置是配置正确,因为当我通过双击 .exe 运行相同的代码时,我连接并可以毫无问题地添加组。
因此我猜测 Visual Studio 正在一些奇怪的用户/组下运行,并搞砸了 dcom 权限(主要是回调)。
编辑:代码
BGServer server;
private void Form1_Load(object sender, EventArgs e)
{
server = new BGServer(this);
server.Connect(new OPC.Common.Host() { HostName = "xp-devbox2", UserName = "OPCUser", Password = "OPCUser" }, "FactoryTalk Gateway", null, ServerConnected);
}
void ServerConnected(BGException ex, object tag)
{
if (ex != null)
{
label1.Text = ex.Message;
}
else
{
//we've connected to the server. let's start subscribing to stuff!
server.AddGroup("Tuner DataGroup", true, 1000, 0, null, null, new OnBGSrvAddGroup(GroupAdded));
}
}
private BGGroup dGroup;
void GroupAdded(BGException ex, BGGroup group, object tag)
{
if (ex != null)
{
label1.Text = ex.Message;
}
else label1.Text = "Group Added";
}
I'm writing an OPC client that connects to a remote server and reads data etc. I am using advosol's BGServer class. The issue is, when I run the program in visual studio I get the following error on adding a group.
"Exception from HRESULT: 0x80040202"
My problem is similar to (http://stackoverflow.com/questions/5978721/opc-server-access-remotely-using-opcda-net-tools), however, I know the DCom settings are configured correctly because when I run the same code by double clicking the .exe I connect and can add a group with no problems.
Therefore I'm guessing that visual studio is running under some strange user/group, and screws up the dcom permissions (mainly with callbacks).
edit: code
BGServer server;
private void Form1_Load(object sender, EventArgs e)
{
server = new BGServer(this);
server.Connect(new OPC.Common.Host() { HostName = "xp-devbox2", UserName = "OPCUser", Password = "OPCUser" }, "FactoryTalk Gateway", null, ServerConnected);
}
void ServerConnected(BGException ex, object tag)
{
if (ex != null)
{
label1.Text = ex.Message;
}
else
{
//we've connected to the server. let's start subscribing to stuff!
server.AddGroup("Tuner DataGroup", true, 1000, 0, null, null, new OnBGSrvAddGroup(GroupAdded));
}
}
private BGGroup dGroup;
void GroupAdded(BGException ex, BGGroup group, object tag)
{
if (ex != null)
{
label1.Text = ex.Message;
}
else label1.Text = "Group Added";
}
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您是否使用免注册 COM 与 OPC 通信?当您使用“Visual Studio 托管进程”时,您创建的 do reg-free COM 的任何外部“.exe.manifest”文件都不会被带入 vshost.exe 进程的清单中。
Are you using reg-free COM to communicate with the OPC? When you use the "Visual Studio Hosting Process" any external ".exe.manifest" files that you create the do reg-free COM will not be carried into the manifest of the vshost.exe process.