How to save textbox data to file using FolderBrowsedialog

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Am new to VB.NET. In the Below code when i compile it, Am getting an error when i check the Select Radiobutton and browse the folder and clikc the GENERATE HL7 Message am getting an error as "Error: Expression is a value and therefore cannot be the target of an assignment." when i check the Default Radiobutton it works like a charm. But when i check the Select Radiobutton am getting the error. I don't know whats wrong in my code. you can find my design in the following URL:http://s1065.photobucket.com/user/Izaz_Ahmed/media/Capture_zpst4jjgvxb.jpg.html

Here is my code:

Private Sub HL_Click(sender As Object, e As EventArgs) Handles HL.Click

        If vld(TxtProcode) = False Then
            Exit Sub
        End If

        Dim file As System.IO.StreamWriter
        Dim folderBrowser As New FolderBrowserDialog
        Dim fileDateTime As String = DateTime.Now.ToString("yyyyMMdd") & DateTime.Now.ToString("HHmmss") & ".HL7"
        Dim ts As String = DateTime.Now.ToString("yyyyMMdd") & DateTime.Now.ToString("HHmmss")
        'file = My.Computer.FileSystem.OpenTextFileWriter("C:\pdata\New folder\" & fileDateTime, True)
        folderBrowser.ShowNewFolderButton = True
        If RadioBtndefault.Checked Then
            TxtDob.Format = DateTimePickerFormat.Custom
            TxtDob.CustomFormat = "yyyyMMdd"
            TxtExamtime.Format = DateTimePickerFormat.Custom
            TxtExamtime.CustomFormat = "hhMMss"
            TxtExamdate.Format = DateTimePickerFormat.Custom
            TxtExamdate.CustomFormat = "yyyyMMdd"
            file = My.Computer.FileSystem.OpenTextFileWriter("C:\pdata\New folder\" & fileDateTime, True)
            file.WriteLine("MSH|^~\&|||||" & TxtExamdate.Text & "" & TxtExamtime.Text & "||ORM^O01||P|2.3.1")
            file.WriteLine("PID|||" & TxtId.Text & "||" & TxtFamilyname.Text & "^" & TxtGivenname.Text & "||" & TxtDob.Text & "||" & TxtGender.Text & "|||" & TxtStreet.Text & " " & TxtHouse.Text & "^^" & TxtCity.Text & "^^" & TxtPostcode.Text)
            file.WriteLine("PV1||O|||||||||||||||||" & TxtId.Text & "|||||||||||||||||||||||||" & ts)
            file.WriteLine("ORC|NW|" & ts & "|||||^^^S||" & TxtExamdate.Text)
            file.WriteLine("OBR||" & ts & "^" & ts & "||" & TxtProcode.Text & "|||" & TxtExamdate.Text & "" & TxtExamtime.Text & "|" & TxtExamdate.Text & "" & TxtExamtime.Text)
            file.WriteLine()
            file.Close()
        End If

        If RadioBtnselect.Checked Then
            If folderBrowser.ShowDialog() = DialogResult.OK Then
                file.WriteLine = folderBrowser.SelectedPath
                file.WriteLine("MSH|^~\&|||||" & TxtExamdate.Text & "" & TxtExamtime.Text & "||ORM^O01||P|2.3.1")
                file.WriteLine("PID|||" & TxtId.Text & "||" & TxtFamilyname.Text & "^" & TxtGivenname.Text & "||" & TxtDob.Text & "||" & TxtGender.Text & "|||" & TxtStreet.Text & " " & TxtHouse.Text & "^^" & TxtCity.Text & "^^" & TxtPostcode.Text)
                file.WriteLine("PV1||O|||||||||||||||||" & TxtId.Text & "|||||||||||||||||||||||||" & ts)
                file.WriteLine("ORC|NW|" & ts & "|||||^^^S||" & TxtExamdate.Text)
                file.WriteLine("OBR||" & ts & "^" & ts & "||" & TxtProcode.Text & "|||" & TxtExamdate.Text & "" & TxtExamtime.Text & "|" & TxtExamdate.Text & "" & TxtExamtime.Text)
                file.WriteLine()
                file.Close()
                Dim root As Environment.SpecialFolder = folderBrowser.RootFolder
            End If
        End If
End Class

Posted 7-Jun-15 7:16am

Shaik Izaz

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Comments

Ralf Meier 8-Jun-15 0:33am

Perhaps you should write the line for the Dialog-call like this :
Dim myResult As DialogResult = folderbrowser1.ShowDialog()
and after that you ask for the myResult.

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Kschuler · Answer 1 · 2015-06-09T11:08:00

The line of code that sets up writing to the file:

file = My.Computer.FileSystem.OpenTextFileWriter("C:\pdata\New folder\" & fileDateTime, True)

Is within the If statement for the default button. This code is never hit when you use the other button. You need this to be outside the if block, or copied into the If block for the other button.