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Desktop Development » Printing » General     Intermediate

DataGrid Printing Class v1.0b

By Nidhi S

A DataGrid printing class.
VB, Windows, .NET 1.1, .NETVS, VS.NET2003, Dev

Posted: 31 May 2005
Updated: 31 May 2005
Views: 91,556
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Popularity: 5.18 Rating: 4.65 out of 5
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Sample Image - UML_Design.jpg

UML design

Sample Image - Preview.jpg

Preview

Introduction

The DataGrid control is one of the worst things to work with, yet very needed. The real problem about this control is printing the grid. This class supports RightToLeft printing, colored and aligned grid printing.

Background

I had to do a project that supports RightToLeft grid printing using VB.NET, but all the printing classes I found just didn't do the job. I found a project but it was written using C# and I had to write the project using VB.NET. So I have rewritten the same project in DataGrid Printing Class V1.0b by nashcontrol in VB.NET.

Implementation

The main class is PrinterClass, it does the actual print. Grid is a class holding the DataGrid data, it's made of cells and headers. Cell represents a single cell in a grid with location, font alignment etc. Header represents a single header cell (inherits cell).

Using the code

Grid Creation: Creating the Constructor for the Grid

Public Sub New(ByVal TheGrid As DataGrid)
  Try
      '//get the Data in the grid

      Dim TableGrid As DataTable = Nothing
      If (TheGrid.DataSource.GetType() Is GetType(DataView)) Then
          Dim ViewGrid As DataView = CType(TheGrid.DataSource, DataView)
          TableGrid = ViewGrid.Table
      Else
          TableGrid = CType(TheGrid.DataSource, DataTable)
      End If

      '//set number of rows

      row = TableGrid.Rows.Count

      'set number of columns

      'first check if the grid has tablestyle and columnstyle

      'check for table styles

      If (TheGrid.TableStyles.Count = 0) Then
          '//create table style and column style

          CreateColumnStyles(TheGrid, TableGrid)
      Else
          '//create column styles if there are none

          If (TheGrid.TableStyles(TableGrid.TableName).GridColumnStyles.Count=0) Then
              CreateColumnStyles(TheGrid, TableGrid
          End If
      End If

      '//set number of columns

      column = TheGrid.TableStyles(TableGrid.TableName).GridColumnStyles.Count
      Cells = New Cell(Rows, Columns) {}
      'Copy Cells

      Dim i As Integer
      For i = 0 To Rows - 1
          Dim j As Integer
          For j = 0 To Columns - 1
            Cells(i, j) = New Cell(i, j, TheGrid.Font, _
              TheGrid.TableStyles(TableGrid.TableName).GridColumnStyles(j).Alignment,_
              New RectangleF(0, 0, TheGrid.GetCellBounds(i, j).Width, _
              TheGrid.GetCellBounds(i, j).Height), TheGrid(i, j).ToString())
          Next
      Next

      'init number of columns to headers

      Headers = New Header(column) {}
      SetHeaders(TheGrid, TableGrid)
      'define grid colors

      SetColors(TheGrid)

  Catch e As Exception
      Console.WriteLine(e.Message)
  End Try
End Sub

Grid Printing

Private Function PrintDataGrid(ByVal g As Graphics) As Boolean
  Dim sf As StringFormat = New StringFormat
  PageCounter = PageCounter + 1
  'if we want to print the grid right to left

  If (bRightToLeft) Then
    CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width_
               - PrintDoc.DefaultPageSettings.Margins.Right
    sf.FormatFlags = StringFormatFlags.DirectionRightToLeft
  Else
    CurrentX = PrintDoc.DefaultPageSettings.Margins.Left
  End If

  Dim i As Integer
  For i = CurrentRow To PrintGrid.Rows - 1
    Dim j As Integer
    For j = 0 To PrintGrid.Columns - 1
      'set cell alignment

      Select Case (PrintGrid.Cell(i, j).Alignment)
        'left

        Case HorizontalAlignment.Left
          sf.Alignment = StringAlignment.Near
        Case HorizontalAlignment.Center
          sf.Alignment = StringAlignment.Center
        'right

        Case HorizontalAlignment.Right
          sf.Alignment = StringAlignment.Far
      End Select

      'advance X according to order

      If (bRightToLeft) Then
        'draw the cell bounds (lines) and back color

        g.FillRectangle(New SolidBrush(PrintGrid.BackColor), _
            CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, _
            PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height)
        g.DrawRectangle(New Pen(PrintGrid.LineColor), _
            CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, _
            PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height)

        'draw the cell text

        g.DrawString(PrintGrid.Cell(i, j).CText, _
            PrintGrid.Cell(i, j).Font, New SolidBrush(PrintGrid.ForeColor),_
            New RectangleF(CurrentX - PrintGrid.Cell(i, j).Width, _
            CurrentY, PrintGrid.Cell(i, j).Width, _
            PrintGrid.Cell(i, j).Height), sf)

        'next cell

        CurrentX -= PrintGrid.Cell(i, j).Width
      Else
        'draw the cell bounds (lines) and back color

        g.FillRectangle(New SolidBrush(PrintGrid.BackColor), _
          CurrentX, CurrentY, PrintGrid.Cell(i, j).Width, _
          PrintGrid.Cell(i, j).Height)
        g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX, _
          CurrentY, PrintGrid.Cell(i, j).Width, _
          PrintGrid.Cell(i, j).Height)
        'Draw text by alignment

        g.DrawString(PrintGrid.Cell(i, j).CText, _
          PrintGrid.Cell(i, j).Font, New SolidBrush(PrintGrid.ForeColor),_
          New RectangleF(CurrentX, CurrentY, _
          PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height), sf)

        'next cell

        CurrentX += PrintGrid.Cell(i, j).Width
      End If
    Next

    'reset to beginning

    If (bRightToLeft) Then
      'right align

      CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width_
                 - PrintDoc.DefaultPageSettings.Margins.Right
    Else
      'left align

      CurrentX = PrintDoc.DefaultPageSettings.Margins.Left
    End If

    'advance to next row

    CurrentY += PrintGrid.Cell(i, 0).Height
    CurrentRow += 1
    'if we are beyond the page margin (bottom) 

    'then we need another page,

    'return true

    If (CurrentY > PrintDoc.DefaultPageSettings.PaperSize.Height_
              - PrintDoc.DefaultPageSettings.Margins.Bottom) Then
      Return True
    End If
  Next
  Return False
End Function

Current Todo:

  1. Fix - When grid is empty, header is not printed well.
  2. When grid is lager than the width of the page, continue to next.

Other DataGrid Printing Classes

Acknowledgements

Thanks to nashcontrol who has given me permission to upload the project converted into VB.NET.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

About the Author

Nidhi S


Nidhi Shrivastava
B.Sc (Maths), M.Sc(Maths), PGDCA(NIIT)
Working as a freelance software developer.

Experienced in C# .NET, VB .NET, VB 6.0, SQL Server 2000, Java 2 SDK.

Worked with PMPCertify (home based) (pmpcertify.org).
Currently working with .NET and its technology for last 1 and half years. Previously worked with VB 6.0 and have done many projects using it.

Hobbies include reading, music and travelling.
Occupation: Web Developer
Location: India India

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Subject  Author Date 
Questionvb.net form printing problemmemberraniranjith5:40 14 May '08  
AnswerRe: vb.net form printing problemmemberNidhi S20:58 20 May '08  
GeneralNICE ARTICLE BUT ANY PROGRESS ??membergurdeeptoor10:24 23 Mar '08  
QuestionSMS in PDU modememberNko-c3:15 30 May '07  
GeneralSearch in a data basemembervmarcial4:21 23 Mar '07  
GeneralRe: Search in a data basememberNidhi S21:14 29 Mar '07  
QuestionPrinting header problemmembermakeafirstmove3:16 26 Feb '07  
GeneralVery Usefulmemberkurienmanu@hotmail.com,2:37 10 Feb '07  
GeneralRe: Very Usefulmembermakeafirstmove1:22 26 Feb '07  
QuestionPortrait or LandscapememberOumaBeskuit19:11 8 Feb '07  
GeneralMessage for Nidhi.smembercoolblim17:41 9 Jan '07  
Generalhow can i use vb.net code in asp.netmemberfffffffffff3:24 8 Jan '07  
GeneralHeader for Columns missingmembertony joseph david4:26 12 Dec '06  
GeneralRe: Header for Columns missingmemberNidhi S3:15 14 Dec '06  
Questionchanging the view of the datagridmemberDBND7:53 20 Oct '06  
Questionviewing a particular rowmemberDBND7:52 20 Oct '06  
QuestionChange the size of the columnsmembersax688:08 10 Oct '06  
AnswerRe: Change the size of the columnsmemberNidhi S19:13 10 Oct '06  
QuestionRe: Change the size of the columnsmembersax681:20 11 Oct '06  
QuestionPrinting a grid with many columnsmemberNko-c4:19 24 Aug '06  
AnswerRe: Printing a grid with many columnsmemberNidhi S18:50 24 Aug '06  
GeneralExcellent, but if dataview.rowfilter ErrormemberMXTRULA10:25 18 Jul '06  
GeneralExcellent !!!! 5 point, but one small problem [modified]memberMXTRULA12:51 14 Jul '06  
GeneralPrint cells of Heder Mergingmembervakily8:34 7 Jul '06  
Generalprinting problemmemberanil9995:20 18 Jun '06  

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Last Updated: 31 May 2005
Editor: Smitha Vijayan
Copyright 2005 by Nidhi S
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