C# 打印DataTable
2013年03月05日
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public class PrintFunction
...{
public String printName = String.Empty;
public Font prtTextFont = new Font("Verdana", 10);
public Font prtTitleFont = new Font("宋体", 10);
private String[] titles = new String[0];
public String[] Titles
...{
set
...{
titles = value as String[];
if (null == titles)
...{
titles = new String[0];
}
}
get
...{
return titles;
}
}
private Int32 left = 20;
private Int32 top = 20;
public Int32 Top
...{
set
...{
top = value;
}
get
...{
return top;
}
}
public Int32 Left
...{
set
...{
left = value;
}
get
...{
return left;
}
}
private DataTable printedTable;
private Int32 pheight;
private Int32 pWidth;
private Int32 pindex;
private Int32 curdgi;
private Int32[] width;
private Int32 rowOfDownDistance = 3;
private Int32 rowOfUpDistance = 2;
public Boolean PrintDataTable(DataTable table)
...{
PrintDocument prtDocument = new PrintDocument();
try
...{
if (printName != String.Empty)
...{
prtDocument.PrinterSettings.PrinterName = printName;
}
prtDocument.DefaultPageSettings.Landscape = true;
prtDocument.OriginAtMargins = false;
PrintDialog prtDialog = new PrintDialog();
prtDialog.AllowSomePages = true;
prtDialog.ShowHelp = false;
prtDialog.Document = prtDocument;
if (DialogResult.OK != prtDialog.ShowDialog())
...{
return false;
}
printedTable = table;
pindex = 0;
curdgi = 0;
width = new Int32[printedTable.Columns.Count];
pheight = prtDocument.PrinterSettings.DefaultPageSettings.Bounds.Bottom;
pWidth = prtDocument.PrinterSettings.DefaultPageSettings.Bounds.Right;
prtDocument.PrintPage += new PrintPageEventHandler(Document_PrintPage);
prtDocument.Print();
}
catch( InvalidPrinterException ex )
...{
MessageBox.Show("没有安装打印机");
}
catch (Exception ex)
...{
MessageBox.Show("打印错误");
}
prtDocument.Dispose();
return true;
}
Int32 startColumnControls = 0;
Int32 endColumnControls = 0;
private void Document_PrintPage(object sender, PrintPageEventArgs ev)
...{
Int32 x = left;
Int32 y = top;
Int32 rowOfTop = top;
Int32 i;
Pen pen = new Pen(Brushes.Black, 1);
if (0 == pindex)
...{
for (i = 0; i < titles.Length; i++)
...{
ev.Graphics.DrawString(titles[i], prtTitleFont, Brushes.Black, left, y + rowOfUpDistance);
y += prtTextFont.Height + rowOfDownDistance;
}
rowOfTop = y;
foreach(DataRow dr in printedTable.Rows)
...{
for (i = 0; i < printedTable.Columns.Count; i++)
...{
Int32 colwidth = Convert.ToInt16(ev.Graphics.MeasureString(dr[i].ToString().Trim(), prtTextFont).Width);
if (colwidth>width[i])
...{
width[i] = colwidth;
}
}
}
}
for (i = endColumnControls; i < printedTable.Columns.Count; i++)
...{
String headtext = printedTable.Columns[i].ColumnName.Trim();
if (pindex == 0)
...{
int colwidth = Convert.ToInt16(ev.Graphics.MeasureString(headtext, prtTextFont).Width);
if (colwidth > width[i])
...{
width[i] = colwidth;
}
}
if (x + width[i] > pheight)
...{
break;
}
ev.Graphics.DrawString(headtext, prtTextFont, Brushes.Black, x, y + rowOfUpDistance);
x += width[i];
}
startColumnControls = endColumnControls;
if (i < printedTable.Columns.Count)
...{
endColumnControls = i;
ev.HasMorePages = true;
}
else
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