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how to close and re-open a stream reader object

I am running into some issues where I throw an error when my file location is not available and in my catch statement I want to select a new file location that does exist.

Here is the code:

  Try
                    'Starts the process to Write the file in the defined export location.
                    Dim Stream As FileStream = New FileStream(exportFile.FullName, FileMode.Append)
                    Dim streamWriter As New StreamWriter(Stream)
                    streamWriter.Write(strExportHeader & strExportText)
                    streamWriter.Close()
                    Stream.Close()
                    'This is triggered if export folder has change or has been deleted and canoot find the Partfile Export location.
                Catch dirEx As DirectoryNotFoundException
                    mainFormStatusStripLabel.Font = New Font(mainFormStatusStripLabel.Font.FontFamily, 8, FontStyle.Regular)
                    mainFormStatusStripLabel.BackColor = System.Drawing.Color.Red
                    mainFormStatusStripLabel.Text = "The following export directory was not found..."
                    Dim Stream As FileStream = New FileStream(masterSettings.masterExport.masterExportOfflineLocation, FileMode.Append)
                    Dim streamWriter As New StreamWriter(Stream)
                    streamWriter.Write(strExportHeader & strExportText)
                    streamWriter.Close()
                    Stream.Close()
                Catch wio As IOException
                    Dim errStr As String
                    errStr = "The following export could not be written to. The file could be in use or corrupt..." & vbCrLf & vbCrLf
                    errStr += exportFile.FullName & vbCrLf & vbCrLf
                    errStr += "Press OK to select as temporary directory. NOTE: This must be changed in the Configuration or this dialog will continue to appear."
                    MessageBox.Show(errStr, "File In Use", MessageBoxButtons.OK, MessageBoxIcon.Warning)
                    Return -10
                End Try
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it_saige
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cmdolcet
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ASKER

it_saige,

Taking your first example into my code. I get to the:

Try
            [stream] = New FileStream(masterSettings.masterExport.masterExportOfflineLocation, FileMode.Append)  

and ten it jumps to the Finally statement.

Any idea as to why?
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cmdolcet
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ASKER

It says fileStream is a type and cannot be used as an expression?
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it_saige
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Both methods work for me:

Test code: 
Imports System.IO

Module Module1
	Sub Main()
		Console.WriteLine("Running example 1: {0}", Example1())
		Console.WriteLine("Running example 2: {0}", Example2())
		Console.ReadLine()
	End Sub

	Function Example1() As Integer
		Dim [stream] As FileStream = Nothing
		Dim [writer] As StreamWriter = Nothing
		Try
			'Starts the process to Write the file in the defined export location.
			[stream] = New FileStream("C:\_admin\EE_Q28974184\testing1\testingex1.txt", FileMode.Append)
			[writer] = New StreamWriter([stream])
			[writer].Write("This is a test of example1")
			'This is triggered if export folder has change or has been deleted and canoot find the Partfile Export location.
		Catch dirEx As DirectoryNotFoundException
			If [writer] IsNot Nothing Then [writer].Dispose()
			If [stream] IsNot Nothing Then [stream].Dispose()

			[writer] = Nothing
			[stream] = Nothing

			Try
				[stream] = New FileStream("C:\_admin\EE_Q28974184\testingex1.txt", FileMode.Append)
				[writer] = New StreamWriter([stream])
				[writer].Write("This is a test of example1")
			Finally
				If [writer] IsNot Nothing Then [writer].Dispose()
				If [stream] IsNot Nothing Then [stream].Dispose()

				[writer] = Nothing
				[stream] = Nothing
			End Try
		Catch wio As IOException
			Console.WriteLine(wio.Message)
			Return -10
		Finally
			If [writer] IsNot Nothing Then [writer].Dispose()
			If [stream] IsNot Nothing Then [stream].Dispose()

			[writer] = Nothing
			[stream] = Nothing
		End Try
	End Function

	Function Example2() As Integer
		Try
			'Starts the process to Write the file in the defined export location.
			Using [stream] As New FileStream("C:\_admin\EE_Q28974184\testing2\testingex2.txt", FileMode.Append)
				Using [writer] As New StreamWriter([stream])
					[writer].Write("This is a test of example2")
				End Using
			End Using
			'This is triggered if export folder has change or has been deleted and canoot find the Partfile Export location.
		Catch dirEx As DirectoryNotFoundException
			Using [stream] As New FileStream("C:\_admin\EE_Q28974184\testingex2.txt", FileMode.Append)
				Using [writer] As New StreamWriter([stream])
					[writer].Write("This is a test of example2")
				End Using
			End Using
		Catch wio As IOException
			Console.WriteLine(wio.Message)
			Return -10
		End Try
	End Function
End Module

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Test folders:User generated imageTest output:User generated imageSuccessful output:User generated imageExceptional output:User generated image
-saige-
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it_saige
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It is possible, though, that you have a class or module that is named fileStream.  If this is the case try explicitly declaring the usage of filestream; e.g. - 
Module Module1
	Sub Main()
		Console.WriteLine("Running example 1: {0}", Example1())
		Console.WriteLine("Running example 2: {0}", Example2())
		Console.ReadLine()
	End Sub

	Function Example1() As Integer
		Dim [stream] As System.IO.FileStream = Nothing
		Dim [writer] As System.IO.StreamWriter = Nothing
		Try
			'Starts the process to Write the file in the defined export location.
			[stream] = New System.IO.FileStream("C:\_admin\EE_Q28974184\testing1\testingex1.txt", System.IO.FileMode.Append)
			[writer] = New System.IO.StreamWriter([stream])
			[writer].Write("This is a test of example1")
			'This is triggered if export folder has change or has been deleted and canoot find the Partfile Export location.
		Catch ex As System.IO.DirectoryNotFoundException
			If [writer] IsNot Nothing Then [writer].Dispose()
			If [stream] IsNot Nothing Then [stream].Dispose()

			[writer] = Nothing
			[stream] = Nothing

			Try
				[stream] = New System.IO.FileStream("C:\_admin\EE_Q28974184\testingex1.txt", System.IO.FileMode.Append)
				[writer] = New System.IO.StreamWriter([stream])
				[writer].Write("This is a test of example1")
			Finally
				If [writer] IsNot Nothing Then [writer].Dispose()
				If [stream] IsNot Nothing Then [stream].Dispose()

				[writer] = Nothing
				[stream] = Nothing
			End Try
		Catch ex As System.IO.IOException
			Console.WriteLine(ex.Message)
			Return -10
		Finally
			If [writer] IsNot Nothing Then [writer].Dispose()
			If [stream] IsNot Nothing Then [stream].Dispose()

			[writer] = Nothing
			[stream] = Nothing
		End Try
	End Function

	Function Example2() As Integer
		Try
			'Starts the process to Write the file in the defined export location.
			Using [stream] As New System.IO.FileStream("C:\_admin\EE_Q28974184\testing2\testingex2.txt", System.IO.FileMode.Append)
				Using [writer] As New System.IO.StreamWriter([stream])
					[writer].Write("This is a test of example2")
				End Using
			End Using
			'This is triggered if export folder has change or has been deleted and canoot find the Partfile Export location.
		Catch ex As System.IO.DirectoryNotFoundException
			Using [stream] As New System.IO.FileStream("C:\_admin\EE_Q28974184\testingex2.txt", System.IO.FileMode.Append)
				Using [writer] As New System.IO.StreamWriter([stream])
					[writer].Write("This is a test of example2")
				End Using
			End Using
		Catch ex As System.IO.IOException
			Console.WriteLine(ex.Message)
			Return -10
		End Try
	End Function
End Module

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