如何使用PrintDocument在纸上打印图像
我的问题是我的代码打印的图像彼此重叠。我不知道如何改变x和y位置。打印机应每行打印3张图像，然后移动到下一行。
private void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
for (int serial = 0; serial < SaveBeforePrint.Count; serial++)
{
String intercharacterGap = "0";
String str = '*' + SaveBeforePrint[serial].ToUpper() + '*';
int strLength = str.Length;
for (int i = 0; i < SaveBeforePrint[serial].Length; i++)
{
string barcodestring = SaveBeforePrint[serial].ToUpper();
if (alphabet39.IndexOf(barcodestring[i]) == -1 || barcodestring[i] == '*')
{
e.Graphics.DrawString("INVALID BAR CODE TEXT", Font, Brushes.Red, 10, 10);
return;
}
}
String encodedString = "";
for (int i = 0; i < strLength; i++)
{
if (i > 0)
encodedString += intercharacterGap;
encodedString += coded39Char[alphabet39.IndexOf(str[i])];
}
int encodedStringLength = encodedString.Length;
int widthOfBarCodeString = 0;
double wideToNarrowRatio = 3;
if (align != AlignType.Left)
{
for (int i = 0; i < encodedStringLength; i++)
{
if (encodedString[i] == '1')
widthOfBarCodeString += (int)(wideToNarrowRatio * (int)weight);
else
widthOfBarCodeString += (int)weight;
}
}
int x = 0;
int wid = 0;
int yTop = 0;
SizeF hSize = e.Graphics.MeasureString(headerText, headerFont);
SizeF fSize = e.Graphics.MeasureString(code, footerFont);
int headerX = 0;
int footerX = 0;
int printonpage = 0;
if (align == AlignType.Left)
{
x = leftMargin;
headerX = leftMargin;
footerX = leftMargin;
}
else if (align == AlignType.Center)
{
x = (Width - widthOfBarCodeString) / 2;
headerX = (Width - (int)hSize.Width) / 2;
footerX = (Width - (int)fSize.Width) / 2;
}
else
{
x = Width - widthOfBarCodeString - leftMargin;
headerX = Width - (int)hSize.Width - leftMargin;
footerX = Width - (int)fSize.Width - leftMargin;
}
if (showHeader)
{
yTop = (int)hSize.Height + topMargin;
e.Graphics.DrawString(headerText, headerFont, Brushes.Black, headerX, topMargin);
}
else
{
yTop = topMargin;
}
for (int i = 0; i < encodedStringLength; i++)
{
if (encodedString[i] == '1')
wid = (int)(wideToNarrowRatio * (int)weight);
else
wid = (int)weight;
e.Graphics.FillRectangle(i % 2 == 0 ? Brushes.Black : Brushes.White, x, yTop, wid, height);
x += wid;
}
yTop += height;
if (showFooter)
e.Graphics.DrawString(SaveBeforePrint[serial], footerFont, Brushes.Black, footerX, yTop);
}
}
期望的输出：
我得到了：
如您所见，最后一位数字重叠。我想在前一个旁边绘制它
3 个答案:
答案 0 :(得分：0)
您应该在DataGridView（包含列中的图像）的帮助下完成此操作。 然后，图像将在每个新行或列中打印（通过根据需要进行修改） Follow Class将通过在构造函数中传递整个DataGridView和Header来完成您的工作。
using System;
using System.Collections;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
using System.Linq;
namespace Waqas
{
internal class ClsPrint
{
#region Variables
private int iCellHeight = 0; //Used to get/set the datagridview cell height
private int iTotalWidth = 0; //
private int iRow = 0; //Used as counter
private bool bFirstPage = false; //Used to check whether we are printing first page
private bool bNewPage = false; // Used to check whether we are printing a new page
private int iHeaderHeight = 0; //Used for the header height
private StringFormat strFormat; //Used to format the grid rows.
private ArrayList arrColumnLefts = new ArrayList(); //Used to save left coordinates of columns
private ArrayList arrColumnWidths = new ArrayList(); //Used to save column widths
private PrintDocument _printDocument = new PrintDocument();
private DataGridView gw = new DataGridView();
private string _ReportHeader;
#endregion
public ClsPrint(DataGridView gridview, string ReportHeader)
{
_printDocument.DefaultPageSettings.Landscape = true;
_printDocument.DefaultPageSettings.PaperSize.RawKind = (int)PaperKind.A4;
_printDocument.DefaultPageSettings.Margins = new Margins(30, 30, 30, 30);
//_printDocument.DefaultPageSettings.PaperSize.PaperName = "A4";
_printDocument.PrintPage += new PrintPageEventHandler(_printDocument_PrintPage);
_printDocument.BeginPrint += new PrintEventHandler(_printDocument_BeginPrint);
gw = gridview;
_ReportHeader = ReportHeader;
}
public void PrintForm()
{
//Open the print preview dialog
PrintPreviewDialog objPPdialog = new PrintPreviewDialog();
objPPdialog.Document = _printDocument;
objPPdialog.ShowIcon = false;
objPPdialog.Text = "Print Preview";
objPPdialog.WindowState = FormWindowState.Maximized;
objPPdialog.ShowDialog();
}
private void _printDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
//try
//{
//Set the left margin
int iLeftMargin = e.MarginBounds.Left;
//Set the top margin
int iTopMargin = e.MarginBounds.Top;
//Whether more pages have to print or not
bool bMorePagesToPrint = false;
int iTmpWidth = 0;
//For the first page to print set the cell width and header height
if (bFirstPage)
{
foreach (DataGridViewColumn GridCol in gw.Columns)
{
iTmpWidth = ((int) (Math.Floor((double) ((double) GridCol.Width/
(double) iTotalWidth*(double) iTotalWidth*
((double) e.MarginBounds.Width/(double) iTotalWidth)))));
iHeaderHeight = (int) (e.Graphics.MeasureString(GridCol.HeaderText,
GridCol.InheritedStyle.Font, iTmpWidth).Height) + 60;
// Save width and height of headers
arrColumnLefts.Add(iLeftMargin);
arrColumnWidths.Add(iTmpWidth);
iLeftMargin += iTmpWidth;
}
}
//Loop till all the grid rows not get printed
while (iRow <= gw.Rows.Count - 1)
{
DataGridViewRow GridRow = gw.Rows[iRow];
//Set the cell height
iCellHeight = GridRow.Height + 30;
int iCount = 0;
//Check whether the current page settings allows more rows to print
if (iTopMargin + iCellHeight >= e.MarginBounds.Height + e.MarginBounds.Top)
{
bNewPage = true;
bFirstPage = false;
bMorePagesToPrint = true;
break;
}
else
{
if (bNewPage)
{
//Draw Header
e.Graphics.DrawString(_ReportHeader,
new Font("Calibri Light", 20, FontStyle.Bold),
new SolidBrush(Color.Black), e.MarginBounds.Left,
e.MarginBounds.Top+20 - e.Graphics.MeasureString(_ReportHeader,
new Font(gw.Font, FontStyle.Bold),
e.MarginBounds.Width).Height - 13);
String strDate = DateTime.Now.ToString("dd-MMM-yy hh:mm tt");
//Draw Date
e.Graphics.DrawString(strDate,
new Font("Calibri Light", 12, FontStyle.Bold), Brushes.Black,
e.MarginBounds.Left-20 +
(e.MarginBounds.Width - e.Graphics.MeasureString(strDate,
new Font(gw.Font, FontStyle.Bold),
e.MarginBounds.Width).Width),
e.MarginBounds.Top+30 - e.Graphics.MeasureString(_ReportHeader,
new Font(new Font(gw.Font, FontStyle.Bold),
FontStyle.Bold), e.MarginBounds.Width).Height - 13);
//Draw Columns
iTopMargin = e.MarginBounds.Top+30;
DataGridViewColumn[] _GridCol = new DataGridViewColumn[gw.Columns.Count];
int colcount = 0;
//Convert ltr to rtl
foreach (DataGridViewColumn GridCol in gw.Columns)
{
_GridCol[colcount++] = GridCol;
}
for (int i =0; i <= (_GridCol.Count() - 1); i++)
{
e.Graphics.FillRectangle(new SolidBrush(Color.Gainsboro),
new Rectangle((int) arrColumnLefts[iCount], iTopMargin,
(int) arrColumnWidths[iCount], iHeaderHeight));
e.Graphics.DrawRectangle(new Pen(Color.Black),
new Rectangle((int) arrColumnLefts[iCount], iTopMargin,
(int) arrColumnWidths[iCount], iHeaderHeight));
e.Graphics.DrawString(_GridCol[i].HeaderText,
new Font("Calibri Light", 12, FontStyle.Bold),
new SolidBrush(Color.Black),
new RectangleF((int) arrColumnLefts[iCount], iTopMargin,
(int) arrColumnWidths[iCount], iHeaderHeight), strFormat);
iCount++;
}
bNewPage = false;
iTopMargin += iHeaderHeight;
}
iCount = 0;
DataGridViewCell[] _GridCell = new DataGridViewCell[GridRow.Cells.Count];
int cellcount = 0;
//Convert ltr to rtl
foreach (DataGridViewCell Cel in GridRow.Cells)
{
_GridCell[cellcount++] = Cel;
}
//Draw Columns Contents
for (int i =0; i <=(_GridCell.Count() - 1); i++)
{
if (_GridCell[i].Value != null)
{
if (_GridCell[i].GetType() != typeof (DataGridViewImageCell))
{
e.Graphics.DrawString(_GridCell[i].FormattedValue.ToString(),
new Font("Calibri Light", 10),
new SolidBrush(Color.Black),
new RectangleF((int) arrColumnLefts[iCount],
(float) iTopMargin,
(int) arrColumnWidths[iCount], (float) iCellHeight),
strFormat);
}
else
{
Image img = Common.byteArrayToImage((byte[]) _GridCell[i].Value);
Rectangle m = new Rectangle((int) arrColumnLefts[iCount],iTopMargin,
(int) arrColumnWidths[iCount], iCellHeight);
if ((double)img.Width / (double)img.Height > (double)m.Width / (double)m.Height) // image is wider
{
m.Height = (int)((double)img.Height / (double)img.Width * (double)m.Width);
}
else
{
m.Width = (int)((double)img.Width / (double)img.Height * (double)m.Height);
}
e.Graphics.DrawImage(img, m);
}
}
//Drawing Cells Borders
e.Graphics.DrawRectangle(new Pen(Color.Black),
new Rectangle((int) arrColumnLefts[iCount], iTopMargin,
(int) arrColumnWidths[iCount], iCellHeight));
iCount++;
}
}
iRow++;
iTopMargin += iCellHeight;
}
//If more lines exist, print another page.
if (bMorePagesToPrint)
e.HasMorePages = true;
else
e.HasMorePages = false;
//}
//catch (Exception exc)
//{
// KryptonMessageBox.Show(exc.Message, "Error", MessageBoxButtons.OK,
// MessageBoxIcon.Error);
//}
}
private void _printDocument_BeginPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
{
try
{
strFormat = new StringFormat();
strFormat.Alignment = StringAlignment.Center;
strFormat.LineAlignment = StringAlignment.Center;
strFormat.Trimming = StringTrimming.EllipsisCharacter;
arrColumnLefts.Clear();
arrColumnWidths.Clear();
iCellHeight = 0;
iRow = 0;
bFirstPage = true;
bNewPage = true;
// Calculating Total Widths
iTotalWidth = 0;
foreach (DataGridViewColumn dgvGridCol in gw.Columns)
{
iTotalWidth += dgvGridCol.Width;
}
}
catch (Exception ex)
{
KryptonMessageBox.Show(ex.Message, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
作为
ClsPrint _ClsPrint = new ClsPrint(myDataGridView, "MyHeader");
_ClsPrint.PrintForm();
答案 1 :(得分：0)
您的位置变量在循环中被声明为，这意味着它们会在每次循环中被重置。将循环外的X和Y的位置变量保持在serial之上，并根据每个条形码的总宽度（和高度，如果你开始新的条形码行）进行调整。
答案 2 :(得分：0)
我观察了代码并发现问题..在panel1_print中你没有正确递增值..
我已经进行了必要的更改，现在你将获得一行中的4个条和另一行中的第5个 - 检查附图。
只需将此 panel1_Paint 替换为您可以找到更改的新代码。 我把它们标记为
//start changes by Deepak
..
..
..
//end changes by Deepak
并且还将两个变量loopValX和loopValY声明为int
这是代码..
private void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
int loopValX = 0;
int loopValY = -150;
for (int serial = 0; serial < SaveBeforePrint.Count; serial++)
{
String intercharacterGap = "0";
String str = '*' + SaveBeforePrint[serial].ToUpper() + '*';
int strLength = str.Length;
for (int i = 0; i < SaveBeforePrint[serial].Length; i++)
{
string barcodestring = SaveBeforePrint[serial].ToUpper();
if (alphabet39.IndexOf(barcodestring[i]) == -1 || barcodestring[i] == '*')
{
e.Graphics.DrawString("INVALID BAR CODE TEXT", Font, Brushes.Red, 10, 10);
return;
}
}
String encodedString = "";
for (int i = 0; i < strLength; i++)
{
if (i > 0)
encodedString += intercharacterGap;
encodedString += coded39Char[alphabet39.IndexOf(str[i])];
}
int encodedStringLength = encodedString.Length;
int widthOfBarCodeString = 0;
double wideToNarrowRatio = 3;
if (align != AlignType.Left)
{
for (int i = 0; i < encodedStringLength; i++)
{
if (encodedString[i] == '1')
widthOfBarCodeString += (int)(wideToNarrowRatio * (int)weight);
else
widthOfBarCodeString += (int)weight;
}
}
SizeF hSize = e.Graphics.MeasureString(headerText, headerFont);
SizeF fSize = e.Graphics.MeasureString(SaveBeforePrint[serial], footerFont);
int headerX = 0;
int footerX = 0;
if (align == AlignType.Left)
{
x = leftMargin;
headerX = leftMargin;
footerX = leftMargin;
}
else if (align == AlignType.Center)
{
x = (Width - widthOfBarCodeString) / 2;
headerX = (Width - (int)hSize.Width) / 2;
footerX = (Width - (int)fSize.Width) / 2;
}
else
{
x = Width - widthOfBarCodeString - leftMargin;
headerX = Width - (int)hSize.Width - leftMargin;
footerX = Width - (int)fSize.Width - leftMargin;
}
if (showHeader)
{
y = (int)hSize.Height + topMargin;
e.Graphics.DrawString(headerText, headerFont, Brushes.Black, headerX, topMargin);
}
else
{
y = topMargin;
}
//start changes by Deepak
if (serial % 4 == 0)
{
loopValX = 0;
loopValY += 150;
}
else
{
loopValX += 150;
}
x += loopValX;
y += loopValY;
footerX += loopValX;
//end changes by Deepak
for (int i = 0; i < encodedStringLength; i++)
{
if (encodedString[i] == '1')
wid = (int)(wideToNarrowRatio * (int)weight);
else
wid = (int)weight;
e.Graphics.FillRectangle(i % 2 == 0 ? Brushes.Black : Brushes.White, x, y, wid, height);
x += wid;
}
y += height;
if (showFooter)
e.Graphics.DrawString(SaveBeforePrint[serial], footerFont, Brushes.Black, footerX, y);
}
}
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