Vb.net 如何实现报表打印

报表打印的方法有很多种，比如说先导出office 软件中然后进行排版布局，这样和方便，可是需要导入组件，而且必须安装office。下面我们看一种很实在的方法。提供全部源代码。以供朋友们学习交流。 这种方法也很简单，是使用GDI+ 把数据写到PrintDoucument中的 第一步 先引入命名空间 Imports System Imports System.Drawing Imports System.Drawing.Text 第二步 编写PrintDoucument 的Printpage 事件 Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage 下面 我们将数据表 mytab 中的数据写进PrintDoucument 先定义画笔 Dim arialfont As FontFamily = New FontFamily("arial") Dim font As Font = New Font(arialfont, 10, FontStyle.Regular) 然后定义页边距 Dim rleft As Single = 10 Dim rtop As Single = e.MarginBounds.Top - 20 获取每一行的高度 Dim lineheight As Single = font.GetHeight(e.Graphics) 获取Mytab的行数和列数 Dim col As Integer = Mytab.Columns.Count Dim row As Integer = Mytab.Rows.Count 获取Mytab的字段名称 Dim headline As String = "" For i As Integer = 1 To col - 1 Dim coltext As String = Mytab.Columns(i).ColumnName.ToString headline = headline & coltext & Space(1) Next 获取要打印的数据 Dim listviewrows As String() ReDim listviewrows(Me.ListView1.Items.Count + 1) For i As Integer = 0 To row - 1 Dim lentext As String = "" For j As Integer = 1 To col - 1 Dim maxlen As Integer = liewidth(j - 1) Dim coltext As String coltext = Mytab.Rows(i).item(j).ToString lentext = lentext & coltext & Space(3) Next listviewrows(i) = lentext Next 接下来就是真正的写入数据 Do e.Graphics.DrawString(listviewrows(counts), font, Brushes.Black, rleft, rtop) counts = counts + 1 rtop = rtop + lineheight Loop Until rtop > e.MarginBounds.Bottom Or counts >= Mytab.Rows.Count - 1 If counts < Mytab.Rows.Count - 1 Then e.HasMorePages = True Else e.HasMorePages = False End If END Sub 写好以后，就可以打印了 PrintDoucument.print() 到此就可以把数据表Mytab中的所有数据打印出来了