print multiple pages based off size of file.

Hey guys,

I have a question regarding multiple page printing. I know that it has to do with e.HasMorePages. I know that there has to be a condition that sets that flag to true and back to false or you get caught in a never ending print page loop. However, I have no idea where in my simple little print block here to implement that. Can someone give me a suggestion?

As you can see I'm just printing a readline. Sometimes the file extends past a single page though depending on circumstances.

Code:

---

        Dim strReader As StreamReader
        strReader = File.OpenText("auditlog.txt")

        Dim x As Integer = 10
        Dim y As Integer = 10



        Do While strReader.Peek <> -1
            e.Graphics.DrawString(strReader.ReadLine, New Font("Times New Roman", _
                                                              10, FontStyle.Regular), Brushes.Black, x, y)
            y += 12

        Loop

---

Thanks guys

try this:

vb Code:

Public Class Form1
 
    Private printString As String
 
    Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
        Dim charsFitted As Integer
        Dim linesFilled As Integer
        e.Graphics.MeasureString(printString, New Font("Times New Roman", 10, FontStyle.Regular), e.PageBounds.Size, Drawing.StringFormat.GenericTypographic, charsFitted, linesFilled)
        e.Graphics.DrawString(printString, New Font("Times New Roman", 10, FontStyle.Regular), Brushes.Black, e.PageBounds.Left, e.PageBounds.Top)
        printString = printString.Substring(charsFitted)
        If printString <> "" Then
            e.HasMorePages = True
        Else
            e.HasMorePages = False
        End If
    End Sub
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        printString = io.file.readalltext("auditlog.txt")
        PrintDocument1.Print()
    End Sub
 
End Class

where are charsFitted and linesFilled populated at? I'm trying to implement this and not having a lot of luck. I tried to merge the code together. This is what I have.

Code:

---

        Dim strReader As StreamReader
        strReader = File.OpenText("auditlog.txt")
        Dim moreLines As String = ""
        Dim x As Integer = 10
        Dim y As Integer = 10



        Do While strReader.Peek <> -1
            e.Graphics.MeasureString(strReader.ReadLine, New Font("Times New Roman", 10, FontStyle.Regular _
                                                                  ), e.PageBounds.Size, Drawing.StringFormat.GenericTypographic _
                                                                  , x, y)
            e.Graphics.DrawString(strReader.ReadLine, New Font("Times New Roman", _
                                                              10, FontStyle.Regular), Brushes.Black, x, y)
            y += 12
            moreLines = moreLines.Substring(x)

            If moreLines <> "" Then
                e.HasMorePages = True
            Else
                e.HasMorePages = False
            End If
            moreLines = ""
        Loop

---

I am starting to get the idea that the e.HasMorePages can't be in a loop at all.... Just a hunch, lol.

you have to pass the whole of the text file, then truncate it after printing a page, depending on charsFitted which along with linesFilled (which isn't used in my example) are passed in the measurestring arguments byref so they return a value

Ok, I got it to where the charsFitted and linesFilled are populated now its just looping. Do I need to trim off what is printed before checking if charsfitted <> "" again?

Code:

---

        Dim strReader As StreamReader
        strReader = File.OpenText("auditlog.txt")
        Dim docLines As String = ""
        Dim x As Integer = 10
        Dim y As Integer = 10
        Dim charsFitted As Integer
        Dim linesFilled As Integer

        Do While strReader.Peek <> -1
            docLines = docLines & strReader.ReadLine & vbCrLf
        Loop
        strReader.Close()

        MsgBox(docLines)
        e.Graphics.MeasureString(docLines, New Font("Times New Roman", 10, FontStyle.Regular _
                                                                        ), e.PageBounds.Size, Drawing.StringFormat.GenericTypographic _
                                                                        , charsFitted, linesFilled)
        e.Graphics.DrawString(docLines, New Font("Times New Roman", _
                                                                    10, FontStyle.Regular), Brushes.Black, e.PageBounds.Left, _
                                                                    e.PageBounds.Top)
        docLines = docLines.Substring(charsFitted)

        If docLines <> "" Then
            e.HasMorePages = True
        Else
            e.HasMorePages = False
        End If


    End Sub

---

the way you've got it it loads the whole file into docLines every time the printPage sub runs, so it'll loop forever.

when you set e.hasmorepages = true, what happens is that after exiting the printPage sub it runs the printPage sub again