public int StopVI(VirtualInstrument vi)
{
string controlName = "stop";
int status = 4;
if (vi != null)
{
status = 1;
object state = null;
bool found = false;
try
{
state = vi.GetControlValue(controlName);
if (state != null)
{
status = 2;
found = true;
}
else
{
Utilities.WriteLog(controlName + " control not found: null returned");
}
}
catch (Exception e)
{
Utilities.WriteLog(controlName + " control not found: Exception: " + e.Message);
}
if (found)
{
try
{
vi.SetControlValue(controlName, true);
int count = 0;
int maxCount = 1000;
while (vi.ExecState == ExecStateEnum.eRunning && count < maxCount)
{
count++;
Thread.Sleep(20);
}
if (count == maxCount)
{
// Timeout error
status = 3;
}
vi.SetControlValue(controlName, false);
if ((vi.ExecState != ExecStateEnum.eRunning) && (vi.ExecState != ExecStateEnum.eRunTopLevel))
{
Utilities.WriteLog("stopping VI: " + vi.Name + " status=" + (int)GetVIStatus(vi));
status = 0;
}
}
catch (Exception ex)
{
Utilities.WriteLog("Error: setControl " +controlName +": " + ex.Message);
}
}
}
return status;
}
public int SetControlValue(VirtualInstrument vi,string name, object value)
{
int status = -1;
if (vi != null)
{
object state = null;
bool found = false;
try
{
state = vi.GetControlValue(name);
if (state != null)
{
status = 0;
found = true;
}
}
catch (Exception e)
{
Utilities.WriteLog(name + " control not found: " + e.Message);
}
if (found)
{
vi.SetControlValue(name, value);
status = (int)GetVIStatus(vi);
}
}
return status;
}
public object GetControlValue(VirtualInstrument vi, string name)
{
object value = null;
if (vi != null)
{
try
{
value = vi.GetControlValue(name);
}
catch (Exception e)
{
Utilities.WriteLog(name + " control not found: " + e.Message);
throw new Exception(name + " control not found:", e);
}
}
return value;
}
public bool HasControl(VirtualInstrument vi, string name)
{
bool status = false;
object value = null;
try
{
value = vi.GetControlValue(name);
status = true;
}
catch (Exception e)
{
Utilities.WriteLog(name + " control not found: " + e.Message);
}
return status;
}
public int StopVI(VirtualInstrument vi)
{
int status = -1;
if (vi != null)
{
status = 0;
object state = null;
bool found = false;
try
{
state = vi.GetControlValue("stop");
if (state != null)
{
status = 1;
found = true;
}
else
{
Utilities.WriteLog("stop control not found: null returned");
}
}
catch (Exception e)
{
Exception stopEx = new Exception("Control NotFound: stop", e);
Utilities.WriteLog("stop control not found: " + e.Message);
throw stopEx;
}
if (found)
{
try
{
vi.SetControlValue("stop", true);
Thread.Sleep(10);
vi.SetControlValue("stop", false);
Utilities.WriteLog("stopping VI: " + vi.Name + " status=" + (int)GetVIStatus(vi));
status = 2;
}
catch (Exception ex)
{
Exception setControl = new Exception("setControl: stop", ex);
Utilities.WriteLog("Error: setControl stop: " + ex.Message);
throw setControl;
}
}
}
return status;
}
public int SetControlValues(VirtualInstrument vi, string[] names, object[] values)
{
int status = -1;
if (vi != null)
{
object state = null;
bool found = false;
if (names.Length > 0 && names.Length == values.Length)
{
for (int i = 0; i < names.Length; i++)
{
try
{
state = vi.GetControlValue(names[i]);
if (state != null)
{
status = 0;
found = true;
}
}
catch (Exception e)
{
Logger.WriteLine(names[i] + " control not found: " + e.Message);
}
if (found)
{
vi.SetControlValue(names[i], values[i]);
status = (int)GetVIStatus(vi);
}
}
}
}
return status;
}
