printing in VB

I am the newbie in VB how can I print a text file in printer and some text i want to bold it before print out ?????
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Several possibilities to print a textfile:
Open "c:\myfile.txt" For Input As #1
Do while Not Eof(1)
   Line Input #1, x$
   Printer.Print x$
Close 1

2) Add a common dialog control named: cdl

Dim iFileNum As Integer, s As String
  If Len(cdl.filename) > 0 Then
    iFileNum = FreeFile
    Open cdl.filename For Input As iFileNum
    Do While Not EOF(iFileNum)
      Line Input #iFileNum, s
      Printer.Print s
    Close iFileNum
  End If

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If you want to format text, you'll have to use the richtextbox

To make selected text bold, underlined, italic or strikethrough you can use the following code:

Statement Action
RichTextBox1.SelBold = True Makes the selected text Bold
RichTextBox1.SelItalic = True Makes the selected text Italic
RichTextBox1.SelUnderline = True Makes the selected text Underlined
RichTextBox1.SelStrikeThru = True Makes the selected text Strikethrough

To change the alignment, simply use this syntax:

RichTextBox1.SelAlignment = Alignment

Where alignment is one of the following constants:

Constant Alignment
vbRight Right
vbLeft Left
vbCenter Centre

So, the following code will set make the selected text underlined, and aligned to the right.

RichTextBox1.SelAlignment = vbRight
RichTextBox1.SelUnderline = True

To print out a formatted richtextbox:

'Name of Rich Text Box Control = rtf
'Write this code under Print Button

rtf.SelPrint Printer.hDC
rtf.SelStart = lastposition
rtf.SelLength = lastSelection
They are right. As the first example load the text into a richTextBox. You can keep the richtextbox hidden if you like so. Then lets say you want to make all numbers Bold. Use a loop to go through each character... then use this:
if isNumeric(charac ) then    'or if charac="important letter"
rtb.SelBold = True
end if
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