Based on the details you provided, my suggestion would be to create a new action that can handle the same parameters.
For instance:
If you currently have these three actions:
public string ActionA(string parameterA, string parameterB)
{
return parameterA + parameterB;
}
public string ActionB(string parameterA, string parameterB)
{
return parameterA + parameterB + "This ActionB";
}
public IActionResult ActionC()
{
return View();
}
You could then create an additional action, ActionD, that takes in the parameters and invokes ActionA and ActionB.
public IActionResult ActionD(string parameterA, string parameterB)
{
string resultA = ActionA(parameterA, parameterB);
string resultB = ActionB(parameterA, parameterB);
return View(resultA + resultB);
}