小迪的Blog
学习ing...(注明:该Blog中的任何信息都非原创,只是作为个人的阅读笔记)
posts - 144,comments - 52,trackbacks - 0

''======================================= 
'
DATAGRID控件通用打印类 
'
中和科技-孙利臣 
'
于2003年05月27日17:05 
'
用于打印DATAGRID控件中的数据. 
'
======================================= 


Imports System.Drawing.Printing
Imports System.Drawing.Color
Imports System.Windows.Forms
Imports System.Drawing.Font
Imports System.Drawing.PointF
Imports System.Windows.Forms.DataGrid
Imports System.Drawing.Pen
Imports System.Drawing

Public Class PrintClass Print
    
'用户可自定义 
    Private TableFont As New Font("宋体"9)           '当前要打印文本的字体及字号 
    Private HeadFont As New Font("黑体"12, FontStyle.Underline) '表头字体 
    Private SubHeadFont As New Font("楷体_GB2312"10, FontStyle.Regular) '副表头字体 
    Private HeadText As String   '表头文字 
    Private SubHeadLeftText As String  '副表头左文字 
    Private SubHeadRightText As String  '副表头右文字 
    Private HeadHeight As Integer = 40 '表头高度 
    Private SubHeadHeight As Integer = 30 '副表头高度 
    Private FootFont As New Font("黑体"12, FontStyle.Underline) '表脚字体 
    Private SubFootFont As New Font("楷体_GB2312"10, FontStyle.Regular) '副表脚字体 
    Private FootText As String  '表脚文字 
    Private SubFootLeftText As String  '副表脚左文字 
    Private SubfootRightText As String
    
Private FootHeight As Integer = 40 '表脚高度 
    Private SubFootHeight As Integer = 30 '副表脚高度 
    Dim X_unit As Integer                               '表的基本单位 
    Dim Y_unit As Integer = TableFont.Height * 2.5

    
'以下为模块内部使用 
    Private ev As PrintPageEventArgs
    
Private PrintDocument1 As PrintDocument
    
Private DataGridColumn As DataColumn
    
Private DataGridRow As DataRow
    
Private DataTable1 As DataTable
    
Private Cols As Integer                             '当前要打印的列 
    Private Rows As Integer = 0                         '当前要打印的行 
    Private ColsCount As Integer                        '当前DATAGRID共有多少列 
    Private PrintingLineNumber As Integer = 0           '当前正要打印的行号 
    Private PageRecordNumber As Integer                 '当前要所要打印的记录行数,由计算得到. 
    Private PrintingPageNumber As Integer = 0           '正要打印的页号 
    Private PageNumber As Integer                       '共需要打印的页数 
    Private PrintRecordLeave As Integer                 '当前还有多少页没有打印 
    Private PrintRecordComplete As Integer = 0         '已经打印完的记录数 
    Private Pleft As Integer
    
Private Ptop As Integer
    
Private Pright As Integer
    
Private Pbottom As Integer
    
Private Pwidth As Integer
    
Private Pheigh As Integer

    
Private DrawBrush As New SolidBrush(System.Drawing.Color.Black)     '当前画笔颜色 
    Private PrintRecordNumber As Integer '每页打印的记录条数 
    Private Totalpage As Integer '总共应该打印的页数 

    
Sub New()Sub New(ByVal TableSource As DataTable)
        DataTable1 
= New DataTable
        DataTable1 
= TableSource
        ColsCount 
= DataTable1.Columns.Count
    
End Sub


    
'用户自定义字体及字号 
    Public WriteOnly Property SetTableFont()Property SetTableFont() As System.Drawing.Font
        
Set(ByVal Value As System.Drawing.Font)
            TableFont 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetHeadFont()Property SetHeadFont() As System.Drawing.Font
        
Set(ByVal Value As System.Drawing.Font)
            HeadFont 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubHeadFont()Property SetSubHeadFont() As System.Drawing.Font
        
Set(ByVal Value As System.Drawing.Font)
            SubHeadFont 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetFootFont()Property SetFootFont() As System.Drawing.Font
        
Set(ByVal Value As System.Drawing.Font)
            FootFont 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubFootFont()Property SetSubFootFont() As System.Drawing.Font
        
Set(ByVal Value As System.Drawing.Font)
            SubFootFont 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetHeadText()Property SetHeadText() As String
        
Set(ByVal Value As String)
            HeadText 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubHeadLeftText()Property SetSubHeadLeftText() As String
        
Set(ByVal Value As String)
            SubHeadLeftText 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubHeadRightText()Property SetSubHeadRightText() As String
        
Set(ByVal Value As String)
            SubHeadRightText 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetFootText()Property SetFootText() As String
        
Set(ByVal Value As String)
            FootText 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubFootLeftText()Property SetSubFootLeftText() As String
        
Set(ByVal Value As String)
            SubFootLeftText 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubFootRightText()Property SetSubFootRightText() As String
        
Set(ByVal Value As String)
            SubfootRightText 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetHeadHeight()Property SetHeadHeight() As Integer
        
Set(ByVal Value As Integer)
            HeadHeight 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubHeadHeight()Property SetSubHeadHeight() As Integer
        
Set(ByVal Value As Integer)
            SubHeadHeight 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetFootHeight()Property SetFootHeight() As Integer
        
Set(ByVal Value As Integer)
            FootHeight 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetSubFootHeight()Property SetSubFootHeight() As Integer
        
Set(ByVal Value As Integer)
            SubFootHeight 
= Value
        
End Set
    
End Property

    
Public WriteOnly Property SetCellHeight()Property SetCellHeight() As Integer
        
Set(ByVal Value As Integer)
            Y_unit 
= Value
        
End Set
    
End Property


    
Public Sub Print()Sub Print()
        
Try
            PrintDocument1 
= New Printing.PrintDocument
            
AddHandler PrintDocument1.PrintPage, AddressOf Me.PrintDocument1_PrintPage

            
Dim PageSetup As PageSetupDialog
            PageSetup 
= New PageSetupDialog
            PageSetup.Document 
= PrintDocument1
            PrintDocument1.DefaultPageSettings 
= PageSetup.PageSettings
            
If PageSetup.ShowDialog() = DialogResult.Cancel Then
                
Exit Sub
            
End If

            Pleft 
= PrintDocument1.DefaultPageSettings.Margins.Left
            Ptop 
= PrintDocument1.DefaultPageSettings.Margins.Top
            Pright 
= PrintDocument1.DefaultPageSettings.Margins.Right
            Pbottom 
= PrintDocument1.DefaultPageSettings.Margins.Bottom
            Pwidth 
= PrintDocument1.DefaultPageSettings.Bounds.Width
            Pheigh 
= PrintDocument1.DefaultPageSettings.Bounds.Height

            
'将当前页分成基本的单元 
            X_unit = (Pwidth - Pleft - Pright) / DataTable1.Columns.Count - 1
            PrintRecordNumber 
= (Pheigh - Ptop - Pbottom - HeadHeight - SubHeadHeight - FootHeight - SubFootHeight - Y_unit) \ Y_unit

            
If DataTable1.Rows.Count > PrintRecordNumber Then
                
If DataTable1.Rows.Count Mod PrintRecordNumber = 0 Then
                    Totalpage 
= DataTable1.Rows.Count \ PrintRecordNumber
                
Else
                    Totalpage 
= DataTable1.Rows.Count \ PrintRecordNumber + 1
                
End If
            
Else
                Totalpage 
= 1
            
End If

            PrintDocument1.DocumentName 
= Totalpage.ToString
            
Dim PrintPriview As PrintPreviewDialog
            PrintPriview 
= New PrintPreviewDialog
            PrintPriview.Document 
= PrintDocument1
            PrintPriview.WindowState 
= FormWindowState.Maximized
            PrintPriview.ShowDialog()
        
Catch ex As Exception
            
MsgBox("打印错误,请检查打印设置!"16"错误")
        
End Try
    
End Sub


    
Private Sub PrintDocument1_PrintPage()Sub PrintDocument1_PrintPage(ByVal sender As ObjectByVal ev As System.Drawing.Printing.PrintPageEventArgs)

        
Dim row_count As Integer '当前要打印的行 
        PrintRecordLeave = DataTable1.Rows.Count - PrintRecordComplete '还有多少条记录没有打印 
        If PrintRecordLeave > 0 Then
            
If PrintRecordLeave Mod PrintRecordNumber = 0 Then
                PageNumber 
= PrintRecordLeave \ PrintRecordNumber
            
Else
                PageNumber 
= PrintRecordLeave \ PrintRecordNumber + 1
            
End If
        
Else
            PageNumber 
= 0
        
End If

        
'正在打印的页数 
        PrintingPageNumber = 0       '因为每打印一个新页都要计算还有多少页没有打印所以以打印的页数初始为0 
        '计算,余下的记录条数是否还可以在一页打印,不满一页时为假 
        If DataTable1.Rows.Count - PrintingPageNumber * PrintRecordNumber >= PrintRecordNumber Then
            PageRecordNumber 
= PrintRecordNumber
        
Else
            PageRecordNumber 
= (DataTable1.Rows.Count - PrintingPageNumber * PrintRecordNumber) Mod PrintRecordNumber
        
End If

        
Dim fmt As New StringFormat
        fmt.LineAlignment 
= StringAlignment.Center '上下对齐 
        fmt.FormatFlags = StringFormatFlags.LineLimit '自动换行 

        
Dim Rect As New Rectangle '打印区域 
        Dim Pen As New Pen(Brushes.Black, 1'打印表格线格式 

        
While PrintingPageNumber <= PageNumber
            fmt.Alignment 
= StringAlignment.Center '表头中间对齐 
            Rect.Width = Pwidth - Pleft - Pright '表头和副表头宽度等于设置区域宽度 
            Rect.Height = HeadHeight
            Rect.X 
= Pleft
            Rect.Y 
= Ptop
            ev.Graphics.DrawString(HeadText, HeadFont, Brushes.Black, RectangleF.op_Implicit(Rect), fmt) 
'打印表头 

            fmt.Alignment 
= StringAlignment.Near  '副表头左对齐 
            Rect.Width = (Pwidth - Pleft - Pright) / 2 - 1
            Rect.Height 
= SubHeadHeight
            Rect.Y 
= Ptop + HeadHeight
            ev.Graphics.DrawString(SubHeadLeftText, SubHeadFont, Brushes.Black, RectangleF.op_Implicit(Rect), fmt) 
'打印副表头左 

            fmt.FormatFlags 
= StringFormatFlags.DirectionRightToLeft '右副表头文字从右往左排列 
            fmt.Alignment = StringAlignment.Near    '右副表头右对齐 
            Rect.X = Pleft + (Pwidth - Pleft - Pright) / 2
            ev.Graphics.DrawString(SubHeadRightText, SubHeadFont, Brushes.Black, RectangleF.op_Implicit(Rect), fmt) 
'打印副表头右 

            fmt.Alignment 
= StringAlignment.Center
            Rect.X 
= Pleft
            Rect.Y 
= Ptop + HeadHeight + SubHeadHeight + (PrintRecordNumber + 1* (Y_unit) + SubFootHeight
            Rect.Height 
= FootHeight
            Rect.Width 
= Pwidth - Pleft - Pright
            ev.Graphics.DrawString(FootText, FootFont, Brushes.Black, RectangleF.op_Implicit(Rect), fmt)   
'打印表脚 

            fmt.Alignment 
= StringAlignment.Far   '副表左左对齐 
            Rect.X = Pleft
            Rect.Y 
= Ptop + HeadHeight + SubHeadHeight + (PrintRecordNumber + 1* (Y_unit)
            Rect.Height 
= SubFootHeight
            Rect.Width 
= (Pwidth - Pleft - Pright) / 2 - 1
            ev.Graphics.DrawString(SubFootLeftText, SubFootFont, Brushes.Black, RectangleF.op_Implicit(Rect), fmt) 
'打印左表脚 

            fmt.Alignment 
= StringAlignment.Near   '副表头右对齐 
            Rect.X = Pleft + (Pwidth - Pleft - Pright) / 2
            
If DataTable1.Rows.Count = 0 Then
                SubfootRightText 
= "" & Totalpage & "页,共" & Totalpage & ""
            
Else
                SubfootRightText 
= "" & Totalpage - PageNumber + 1 & "页,共" & Totalpage & ""
            
End If
            ev.Graphics.DrawString(SubfootRightText, SubFootFont, Brushes.Black, RectangleF.op_Implicit(Rect), fmt) 
'打印右表脚 

            
'得到datatable的所有列名 
            fmt.Alignment = StringAlignment.Center
            
Dim ColumnText(DataTable1.Columns.Count) As String
            
Dim Table As Integer
            
For Cols = 0 To DataTable1.Columns.Count - 1
                ColumnText(Cols) 
= DataTable1.Columns(Cols).ToString         '得到当前所有的列名 
                Rect.X = Pleft + X_unit * Cols
                Rect.Y 
= Ptop + HeadHeight + SubHeadHeight
                Rect.Width 
= X_unit
                Rect.Height 
= Y_unit
                ev.Graphics.DrawString(ColumnText(Cols), 
New Font(TableFont, FontStyle.Bold), DrawBrush, RectangleF.op_Implicit(Rect), fmt)
                ev.Graphics.DrawRectangle(Pen, Rect)
            
Next
            
'结束---------------------得到datatable的所有列名 
            Dim PrintingLine As Integer = 0                         '当前页面已经打印的记录行数 
            While PrintingLine < PageRecordNumber
                DataGridRow 
= DataTable1.Rows(PrintRecordComplete)        '确定要当前要打印的记录的行号 
                For Cols = 0 To DataTable1.Columns.Count - 1
                    Rect.X 
= Pleft + X_unit * Cols
                    Rect.Y 
= Ptop + HeadHeight + SubHeadHeight + (PrintingLine + 1* (Y_unit)
                    Rect.Width 
= X_unit
                    Rect.Height 
= Y_unit
                    
If DataGridRow(ColumnText(Cols)) Is System.DBNull.Value = False Then
                        ev.Graphics.DrawString(DataGridRow(ColumnText(Cols)), TableFont, DrawBrush, RectangleF.op_Implicit(Rect), fmt)
                    
End If
                    ev.Graphics.DrawRectangle(Pen, Rect)
                
Next
                PrintingLine 
+= 1
                PrintRecordComplete 
+= 1
                
If PrintRecordComplete >= DataTable1.Rows.Count Then
                    ev.HasMorePages 
= False
                    PrintRecordComplete 
= 0
                    
Exit Sub
                
End If
            
End While
            PrintingPageNumber 
+= 1
            
If PrintingPageNumber >= PageNumber Then
                ev.HasMorePages 
= False
            
Else
                ev.HasMorePages 
= True
                
Exit While
            
End If
        
End While

    
End Sub


End Class

posted on 2006-04-10 20:27 小迪 阅读(...) 评论(...) 编辑 收藏