local variable named 'e' cannot be declared
<p>I'm receiving this same error 3 times all variable name e</p>

<p>Error   1   A local variable named 'e' cannot be declared in this scope because it would give a different meaning to 'e', which is already used in a 'parent or current' scope to denote something else D:\nemad\bpInv\bpInv\Form1.cs   46  30  bpInv</p>

<pre><code>    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;
using System.IO;

namespace bpInvite
{
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {

    }

    private void prodID_btn_Click(object sender, EventArgs e)
    {

        //Pass the file path and file name to the StreamReader constructor
        StreamReader sr = new StreamReader(@"D:\nemad\linuxbp\prodIDs.txt");
        string line = string.Empty;
        try
        {
            //Read the first line of text
            line = sr.ReadLine();
            //Continue to read until you reach end of file
            while (line != null)
            {
                this.listBox1.Items.Add(line);
                //Read the next line
                line = sr.ReadLine();
            }

            //close the file
            sr.Close();
        }
        catch (Exception e)
        {
            MessageBox.Show(e.Message.ToString());
        }
        finally
        {
            //close the file
            sr.Close();
        }

    }

    private void pic_btn_Click(object sender, EventArgs e)
    {

        //Pass the file path and file name to the StreamReader constructor
        StreamReader sr = new StreamReader(@"D:\nemad\linuxbp\pic.txt");
        string line = string.Empty;
        try
        {
            //Read the first line of text
            line = sr.ReadLine();
            //Continue to read until you reach end of file
            while (line != null)
            {
                this.listBox2.Items.Add(line);
                //Read the next line
                line = sr.ReadLine();
            }

            //close the file
            sr.Close();
        }
        catch (Exception e)
        {
            MessageBox.Show(e.Message.ToString());
        }
        finally
        {
            //close the file
            sr.Close();
        }

    }

    private void referal_btn_Click(object sender, EventArgs e)
    {

        //Pass the file path and file name to the StreamReader constructor
        StreamReader sr = new StreamReader(@"D:\nemad\linuxbp\refer.txt");
        string line = string.Empty;
        try
        {
            //Read the first line of text
            line = sr.ReadLine();
            //Continue to read until you reach end of file
            while (line != null)
            {
                this.listBox3.Items.Add(line);
                //Read the next line
                line = sr.ReadLine();
            }

            //close the file
            sr.Close();
        }
        catch (Exception e)
        {
            MessageBox.Show(e.Message.ToString());
        }
        finally
        {
            //close the file
            sr.Close();
        }

    }
}
</code></pre>

<p>}</p>
