Steps to reproduce the problem

1. Start Microsoft Visual Studio .NET 2003.
2. On the Start Page menu, click New Project.
3. In the New Project window, click Visual C# Project, click Windows Application, and then click OK.
4. In Solution Explorer, right-click Form1.cs, and then click View Code.
5. Replace the code in Form1.cs with the following code:

   using System;
   using System.Drawing;
   using System.Collections;
   using System.ComponentModel;
   using System.Windows.Forms;
   using System.Data;
   using System.IO;
   using System.Text;
   
   namespace WindowsApplication1
   {
   	public class Form1 : System.Windows.Forms.Form
   	{
   		private System.Windows.Forms.Button button1;
   		private System.ComponentModel.Container components = null;
   
   		public Form1()
   		{
   			InitializeComponent();
   		}
   
   		protected override void Dispose( bool disposing )
   		{
   			if( disposing )
   			{
   				if (components != null) 
   				{
   					components.Dispose();
   				}
   			}
   			base.Dispose( disposing );
   		}
   
   		#region Windows Form Designer generated code
   
   		private void InitializeComponent()
   		{
   			this.button1 = new System.Windows.Forms.Button();
   			this.SuspendLayout();
   
   			this.button1.Location = new System.Drawing.Point(120, 88);
   			this.button1.Name = "button1";
   			this.button1.TabIndex = 0;
   			this.button1.Text = "Test";
   			this.button1.Click += new System.EventHandler(this.button1_Click);
   
   			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
   			this.ClientSize = new System.Drawing.Size(292, 273);
   			this.Controls.Add(this.button1);
   			this.Name = "Form1";
   			this.Text = "Form1";
   			this.ResumeLayout(false);
   
   		}
   		#endregion
   
   		[STAThread]
   		static void Main() 
   		{
   			Application.Run(new Form1());
   		}
   
   		private void button1_Click(object sender, System.EventArgs e)
   		{
   			System.IO.TextWriter _textWriter;
   			try
   			{
   				//initializing textWriter
   				_textWriter = 
   					new StreamWriter( @"Drive:\outputTest.txt",true,Encoding.Default ); 
   			}
   			catch( Exception exInit )
   			{
   				MessageBox.Show(exInit.ToString());
   				return;
   			}
   
   			string str = new String( 'a', 100 );
   
   			try
   			{
   
   				for( int i=0; i<100; i++ )
   				{
   					_textWriter.WriteLine( "{0}:{1}", i, str );
   					_textWriter.Flush();
   				}
   				MessageBox.Show( "file created" );
   			}
   			catch( Exception ex )
   			{
   				MessageBox.Show(ex.ToString());
   				return;
   			}
   			finally
   			{
   				try
   				{
   					// closing file object
   					_textWriter.Close();
   				}
   				catch( Exception ex )
   				{
   					MessageBox.Show(ex.ToString());
   				}
   				finally
   				{
   					_textWriter = null;
   				}
   
   			}
   		}
   	}
   }

   Note The placeholder Drive is a placeholder for the disk that has insufficient space.
6. Press CTRL+F5 to run the application that you created in step 2.
7. Click Test. You will receive the following exception error message two times:
   
   System.IO.IOException: There is not enough space on the disk.
8. Run the Disk Cleanup wizard (Cleanmgr.exe) to free hard disk space.
9. Click Test again. You will receive the following exception error message:
   
   System.IO.IOException: The process cannot access the file "Drive:\outputTest.txt" because it is being used by another process.

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