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   源码介绍

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using System;
using System.IO;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace PDFGenerator
{
    public partial class FrmPdfGenerator : Form
    {
        public static float Money;

        #region 初始化数据
        private void InitValue()
        {
            dgvSource.Rows.Add("110100001", "挂号费", "次", "次", "1.00", "1.00", "1.00");
            dgvSource.Rows.Add("110200003", "急诊诊查费", "次", "次", "6.00", "1.00", "6.00");
            dgvSource.Rows.Add("", "罗红霉素缓释胶囊（罗施立）", "0.15g/粒", "粒", "2.75", "4.00", "11.00");
            dgvSource.Rows.Add("", "镇咳宁胶囊", "0.35g/粒", "粒", "0.83", "12.00", "9.96");
            dgvSource.Rows.Add("", "感咳双清胶囊", "0.3g/粒", "粒", "0.93", "12.00", "11.16");
            dgvSource.Rows.Add("", "酮替芬片", "1mg/片", "片", "0.038", "4.00", "0.15");
            dgvSource.Rows.Add("", "复方甲氧那明胶囊（阿斯美）", "粒", "粒", "0.826", "6.00", "4.96");
            dgvSource.Rows.Add("", "药袋（一次性）", "个", "个", "0.09", "1.00", "0.09");
            dgvSource.Rows.Add("", "药袋（一次性）", "个", "个", "0.09", "1.00", "0.09");
            dgvSource.Rows.Add("", "药袋（一次性）", "个", "个", "0.09", "1.00", "0.09");
            dgvSource.Rows.Add("", "去零分", "次", "次", "0.01", "1.00", "0.01");
            DgvSourceCellClick(null, null);
        }
        #endregion

        #region 计算总金额
        private string TotalMoney()
        {
            try
            {
                Money = 0.00f;
                for (int i = 0; i < dgvSource.Rows.Count - 1; i  )
                {
                    if (dgvSource.Rows[i].Cells[1].Value.ToString() != "去零分")
                        Money  = Convert.ToSingle(dgvSource.Rows[i].Cells[6].Value);
                    //else
                    //Money -= Convert.ToSingle(dgvSource.Rows[i].Cells[6].Value);
                }
                return string.Format("{0:N2}", Money);
            }
            catch (Exception)
            {
                return "0.00";
            }
        }
        #endregion

        #region 单价*数量=金额
        private void CountMoney()
        {
            try
            {
                for (int i = 0; i < dgvSource.Rows.Count - 1; i  )
                {
                    dgvSource.Rows[i].Cells[6].Value = string.Format("{0:N2}",
                                                                     Convert.ToSingle(dgvSource.Rows[i].Cells[4].Value) *
                                                                     Convert.ToSingle(dgvSource.Rows[i].Cells[5].Value));
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, @"出错", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }
        #endregion

        public FrmPdfGenerator()
        {
            InitializeComponent();
        }

        private void FrmPdfGeneratorLoad(object sender, EventArgs e)
        {
            txtDate.Text = DateTime.Now.ToShortDateString();
            InitValue();
        }

        #region 更新状态栏
        private void DgvSourceCellClick(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                lblStatus.Text = @"状态栏：当前共有 "   (dgvSource.RowCount - 1)   @" 条记录，金额合计为 "   TotalMoney()   @" 元，坐标（"  
                 (dgvSource.CurrentCell.RowIndex   1)   @"，"   (dgvSource.CurrentCell.ColumnIndex   1)  
                 @"）";
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, @"出错", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }
        #endregion

        #region 打印费用清单
        private void BtnPrintClick(object sender, EventArgs e)
        {
            Document myDocument = new Document(PageSize.A4, 50, 50, 50, 50);
            try
            {
                string patientName = txtName.Text;
                string patientNumber = txtPatientNumber.Text;
                string sections = txtSections.Text;
                string doctorName = txtDoctor.Text;
                string cashier = txtCashier.Text;

                PdfWriter.GetInstance(myDocument, new FileStream("FeeList.pdf", FileMode.Create));
                myDocument.Open();
                string fontPath = Environment.GetEnvironmentVariable("WINDIR")   "\\FONTS\\SIMHEI.TTF";//强制中文字体，否则无法显示中文
                BaseFont baseFont = BaseFont.CreateFont(fontPath, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);

                //标题居中
                Paragraph paragraph = new Paragraph(txtCapital.Text, new Font(baseFont, 16));
                paragraph.Alignment = Element.ALIGN_CENTER;
                myDocument.Add(paragraph);
                paragraph =
                    new Paragraph(
                        "\n姓名："   patientName   "     日期："   txtDate.Text   "     门诊号："   patientNumber   "     科室："  
                        sections   "     医生："   doctorName   "     收费员："   cashier   "\n\n", new Font(baseFont, 9));
                paragraph.Alignment = Element.ALIGN_LEFT;
                myDocument.Add(paragraph);

                //添加一个表格
                PdfPTable pdfPTable = new PdfPTable(dgvSource.ColumnCount);
                pdfPTable.TotalWidth = myDocument.Right - myDocument.Left;
                float[] widths = { 80f, 130f, 50f, 30f, 50f, 50f, 50f };
                pdfPTable.SetWidths(widths);
                pdfPTable.LockedWidth = true;                //必须锁定宽度，否则修改无效

                //增加表头
                PdfPCell pdfPCell;
                for (int i = 0; i < dgvSource.ColumnCount; i  )
                {
                    pdfPCell = new PdfPCell(new Phrase(dgvSource.Columns[i].HeaderText, new Font(baseFont, 9)));
                    pdfPTable.AddCell(pdfPCell);
                }

                //增加详细数据
                for (int i = 0; i < dgvSource.RowCount - 1; i  )
                {
                    for (int j = 0; j < dgvSource.ColumnCount; j  )
                    {
                        pdfPCell = new PdfPCell(new Phrase(dgvSource.Rows[i].Cells[j].Value.ToString(), new Font(baseFont, 9)));
                        pdfPTable.AddCell(pdfPCell);
                    }
                }

                myDocument.Add(pdfPTable);

                paragraph = new Paragraph("\n金额合计："   TotalMoney(), new Font(baseFont, 9));
                paragraph.Alignment = Element.ALIGN_CENTER;
                myDocument.Add(paragraph);

                myDocument.Close();

                MessageBox.Show(@"打印成功，点击确定打开文件", @"成功", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                try
                {
                    System.Diagnostics.Process.Start("FeeList.pdf");
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, @"出错", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, @"出错", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }
#endregion

        private void BtnDeleteClick(object sender, EventArgs e)
        {
            try
            {
                dgvSource.Rows[dgvSource.CurrentCell.RowIndex].Selected = true;
                foreach (DataGridViewRow dgvRow in dgvSource.SelectedRows)
                {
                    dgvSource.Rows.Remove(dgvRow);
                }
                DgvSourceCellClick(null, null);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, @"出错", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }

        private void BtnClearClick(object sender, EventArgs e)
        {
            dgvSource.Rows.Clear();
        }

        private void BtnRecoverClick(object sender, EventArgs e)
        {
            dgvSource.Rows.Clear();
            InitValue();
        }

        private void BtnExitClick(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void BtnCalClick(object sender, EventArgs e)
        {
            CountMoney();
            DgvSourceCellClick(null, null);
        }

    }
}