How to get parameter count

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Hi

i need a count of parameters in side the method

For example

void m1(int parm1,string parm2)
{
int intcount=// parameter count here (2);
}

C#

void m1(int parm1)
{
  int intcount=// parameter count here (1);
}

Posted 11-Mar-14 1:03am

Amalraj Ramesh

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ArunAmalraj 11-Mar-14 7:10am

In a Method or Constructor??

Amalraj Ramesh 11-Mar-14 7:16am

Method

ZurdoDev 11-Mar-14 7:17am

If you are in the method then you already know the count. Can you explain better what you are really trying to do?

Amalraj Ramesh 11-Mar-14 7:19am

i dont have any idea..

ZurdoDev 11-Mar-14 7:28am

What do you mean? If you are writing code inside of a method, to get the count all you have to do is look at it. Why do you think you need to find it programmatically?

ArunAmalraj 11-Mar-14 7:24am

Try something like this:

foreach(ParameterInfo pParameter in pMethod.GetParameters())
{
//Position of parameter in method
pParameter.Position;

//Name of parameter type
pParameter.ParameterType.Name;

//Name of parameter
pParameter.Name;
}

ArunAmalraj 11-Mar-14 7:24am

http://stackoverflow.com/questions/214086/how-can-you-get-the-names-of-method-parameters
http://stackoverflow.com/questions/3288597/is-there-a-way-to-get-an-array-of-the-arguments-passed-to-a-method/3288784#3288784

Amalraj Ramesh 11-Mar-14 7:32am

Thanks arun.. i got some to implement this idea...

Amalraj Ramesh 11-Mar-14 7:44am

its working..

void m1(int parm1)
{
int intcount=MethodBase.GetCurrentMethod().GetParameters().Count();
}

SanSkun 11-Mar-14 7:32am

May i know which one u want to count...

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OriginalGriff · Answer 1 · 2014-03-11T01:27:00

Unless you use the params keyword, you can't have a variable number of parameters anyway - even if you use the defaulting syntax to omit them when you call it, the actual method will always have the same fixed number of parameters.

If you do use params:

C#

private void MyMethod(params string[] pars)
   {
   ...
   }

Then you can check the number by simply checking the arrays Length property:

C#

private void MyMethod(params string[] pars)
   {
   if (pars.Length > 0)
      {
      ...
      }
   }