Error Message: Does not exist in the current context

Question

I keep getting an error message that 'newName', 'newAddress', 'newZip' does not exist in the current context. I can't figure out why. Help!

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace CustomerApplication
{
    public partial class addCustomerForm : Form
    {   //Constructor method
        public addCustomerForm()
        {
            InitializeComponent();
        }// End of Constructor method
        // saveAndExit_Click method
        private void saveExitBtn_Click(object sender, EventArgs e)
        {
            //save the data first
            saveNewCustomerInfo();
            //next, retrieve hidden form's memory address
            Form myParentForm = CustomerAppStart.getParentForm();
            //now that we have the address use it to display the parentForm
            myParentForm.Show();
            //Finally close this form
            this.Close();
        }// end saveAndExitBtn_Click method

        //cancelBtn_Click method
        private void cancelBtn_Click(object sender, EventArgs e)
        {
            //retrieve hidden form's memory address
            Form myParentForm = CustomerAppStart.getParentForm();
            //now that we have the address use it to display the parentForm
            myParentForm.Show();
            //Finally close this form
            this.Close();
        }
            //end cancelBtn_Click
        //save new customer info
        private void saveNewCustomerInfo()
        {
            //get the values from the textBoxes
            String newName = custNameField.Text;
            String newAddress = custAddressField.Text;
            int newZip = 0;
            try
            {
                newZip = Convert.ToInt32(custZipField.Text);
            }
            catch (Exception e)
            {
            }
            // create a new customer object
            Customer newCustObj = new Customer();
            // set the cust obj. attributes
            newCustObj.setCustomerName(newName);
            newCustObj.setCustomerAddress(newAddress);
            newCustObj.setCustomerZip(newZip);
            // save the new customer object
            Customer.saveACustomer(newCustObj);
        }
    private void mod_Click(object sender, EventArgs e)
        {
        Customer t = new Customer();
        t.setCustomerName(newName);
        t.setCustomerAddress(newAddress);
        t.setCustomerZip(newZip);



        }//end save customer
    }// end add customer for class definition
}

    

Answer 1

Are these the statements where you see the errors?

 private void mod_Click(object sender, EventArgs e)
        {
        Customer t = new Customer();
        t.setCustomerName(newName);
        t.setCustomerAddress(newAddress);
        t.setCustomerZip(newZip);

The variables newName, newAddress and newZip are out of scope in the mod_Click method because they are declared as local variables in your saveNewCustomerInfo method.

If you want to use newName, newAddress and newZip in your mod_Click method, you need to declare them at class level so they can be used in all your class methods.

If I have misunderstood your issue, please let me know.

Answer 2

Are these the statements where you see the errors?

 private void mod_Click(object sender, EventArgs e)
        {
        Customer t = new Customer();
        t.setCustomerName(newName);
        t.setCustomerAddress(newAddress);
        t.setCustomerZip(newZip);

The variables newName, newAddress and newZip are out of scope in the mod_Click method because they are declared as local variables in your saveNewCustomerInfo method.

If you want to use newName, newAddress and newZip in your mod_Click method, you need to declare them at class level so they can be used in all your class methods.

If I have misunderstood your issue, please let me know.

yes and global variables better be disposed well

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Please remember to mark the replies as answers if they help and unmark them if they provide no help , or you may vote-up a helpful post

Answer 3

Hmm. How does on dispose of strings or ints since neither implements IDisposable?

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Regards David R
---------------------------------------------------------------
The great thing about Object Oriented code is that it can make small, simple problems look like large, complex ones.
Object-oriented programming offers a sustainable way to write spaghetti code. - Paul Graham.
Every program eventually becomes rococo, and then rubble. - Alan Perlis
The only valid measurement of code quality: WTFs/minute.

Answer 4

Hi Riced,

  Welcome to MSDN Forum Support.

  GC will collection would do this work,detailed information you can refer to Garbage Collection. If you manually collect the garbage,you can set the instance of strings or ints with null and excute GC.Collect method to collect the garbage.

  Sincerely,

  Jason Wang

                                  

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Jason Wang [MSFT]
MSDN Community Support | Feedback to us

Answer 5

Jason

Thank you for a belated welcome - I've been a member since Feb 2009.

Also you don't need to tell me about GC - the question was meant ironically (read the message I replied to).

The answer is 'you don't since they do not implement IDisposable'. Allowing the GC to retrieve the memory from the heap is not the same as disposing of strings or ints. Unless you simply mean allow them to become inaccessible.

BTW your reply is not an answer to the OP - please unmark it as such.

---

Regards David R
---------------------------------------------------------------
The great thing about Object Oriented code is that it can make small, simple problems look like large, complex ones.
Object-oriented programming offers a sustainable way to write spaghetti code. - Paul Graham.
Every program eventually becomes rococo, and then rubble. - Alan Perlis
The only valid measurement of code quality: WTFs/minute.