C# - Error with Method and Data Type -


i keep getting compiler error says

the best overloaded method match has invalid arguments.

it has int type. i've changed data type int still giving me error. appreciated!

private void btngetpatient_click(object sender, eventargs e) {     if (validator.ispresent(txtpatientid))     {         this.getpatient(txtpatientid); //add method         if (patient == null)         {             messagebox.show("no patient found id. " + "please    try again.", "patient not found");             this.clearcontrols();          }         else             this.displaypatient();      } }  private void getpatient(int patientcode) {     try     {         patient = patientmaintenancedb.getpatient(patientcode); //add method     }     catch (exception ex)     {         messagebox.show(ex.message, ex.gettype().tostring());     } }

the txtpatientid id of textbox not int. why error. overcome this, parsing value of txtpatientid.text:

int patientid; if(int.tryparse(txtpatientid.text, out patientid)) {     this.getpatient(patientid);     if (patient == null)     {         messagebox.show("no patient found id. " + "please    try again.", "patient not found");          this.clearcontrols();      }     else         this.displaypatient();   }

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