private void Btn_DisConn_Click(object sender, EventArgs e)
{
try
{
if (IOPCSyncIO20Obj != null)
{
Marshal.ReleaseComObject(IOPCSyncIO20Obj);
IOPCSyncIO20Obj = null;
}
ServerObj.RemoveGroup(pSvrGroupHandle, 0);
if (IOPCGroupStateMgtObj != null)
{
Marshal.ReleaseComObject(IOPCGroupStateMgtObj);
IOPCGroupStateMgtObj = null;
}
if (MyobjGroup1 != null)
{
Marshal.ReleaseComObject(MyobjGroup1);
MyobjGroup1 = null;
}
if (ServerObj != null)
{
Marshal.ReleaseComObject(ServerObj);
ServerObj = null;
}
}
catch (System.Exception error)
{
MessageBox.Show(error.Message, "Result-Stop Server", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// 断开连接，调用需要捕捉异常
/// </summary>
public void DisConnect() //断开和OPCServer的连接，并释放内存
{
try
{
isConnected = false;
isAddGroup = false;
isAddItems = false;
if (IOPCSyncObj != null)
{
Marshal.ReleaseComObject(IOPCSyncObj);
IOPCSyncObj = null;
}
ServerObj.RemoveGroup(pSvrGroupHandle, 0);
if (GroupObj != null)
{
Marshal.ReleaseComObject(GroupObj);
GroupObj = null;
}
if (ServerObj != null)
{
Marshal.ReleaseComObject(ServerObj);
ServerObj = null;
}
}
catch (System.Exception error)
{
MessageBox.Show(error.Message, "断开OPCServer连接出错", MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
}
/* 断开与OPC.BCNet.S7连接，由上层应用调用 */
/* 这个函数必须在ConnectOPCServerOfBCNetS7函数执行成功后才能调用 */
public static void DisConnectOPCServerOfBCNetS7()
{
/* 释放所有OPC资源 */
try
{
for (int i = 0; i < 1; i++)
{
Marshal.ReleaseComObject(pIOPCSyncIO[i]);
pIOPCSyncIO[i] = null;
}
Marshal.ReleaseComObject(IOPCAsyncIO2Obj);
Serverobj.RemoveGroup(pSvrGroupHandle, 0);
for (int i = 0; i < 1; i++)
{
Marshal.ReleaseComObject(MyobjGroup1);
MyobjGroup1 = null;
}
Marshal.ReleaseComObject(Serverobj);
Serverobj = null;
connectedOK = false;
}
catch (Exception ex) /* 断开OPC服务器异常 */
{
MessageBox.Show(ex.Message); /* 将异常信息输出到数据库 */
}
}
