There was a 'reflection calls WebService parameter count does not match,
No problem when passing a parameter, how to pass multiple parameters?

 
One, called 
Public void GetProduct () {
String iri="http://localhost:61263/WebServiceTest.asmx"; 
Var action="GetCustomerByName"; 
Object [] objParm=new Object [] {1, 2}; 

WebServiceProxy web=new WebServiceProxy (iri, action, ref errMsg); 
Var result=web. ExecuteQuery (action, objParm, ref errMsg); 
} 

Public object ExecuteQuery (string methodName, object [] param, ref string errMsg, int timeOut=3000) {

ErrMsg=string. The Empty; 
The object rtnObj=null; 
Try {
If (this. _typeName==null) {
ErrMsg="Web services to access the name of the class [" + enclosing _wsdlName +"] is not correct, please check!" ; 
return null; 
} 

//call the method 
MethodInfo mi=this. _typeName. GetMethod (methodName); 
If (mi==null) {
ErrMsg="Web services to access the method name [" + methodName +"] is not correct, please check!" ; 
return null; 
} 
Try {

If (param==null) 
RtnObj=mi. Invoke (Instance, null); 
The else {
RtnObj=mi. Invoke (Instance, param); 
} 
{} the catch (Exception tle) 
ErrMsg=$" Web services to access methods error: [{methodName}] {tle. Message}, please check!" ; 
} 

{} the catch (Exception ex) 
ErrMsg=ex. Message + ";" + ex. InnerException; 
} 
Return rtnObj; 
} 

Second, web service method 
[the WebMethod] 
Public int GetCustomerByName (int the age, int salary) {//transfer into 0? 
Return the age + salary; 
}