C#單據列印

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace Print
{
    public partial class Print : Form
    {
        public Print()
        {
            InitializeComponent();
            this.SetMousePosition+=new ReSetMousePosHander(Print_SetMousePosition);
        }

        #region 屬性

        private int _X;

        public int X
        {
            get { return _X; }
            set { _X = value; }
        }
        private int _Y;

        public int Y
        {
            get { return _Y; }
            set { _Y = value; }
        }
        private bool _IsErr = false;

        public bool IsErr
        {
            get { return _IsErr; }
            set { _IsErr = value; }
        }
        #endregion

        public delegate void  ReSetMousePosHander();
        public event ReSetMousePosHander SetMousePosition;
        public void OnSetMousePosition()
        {
            if (SetMousePosition != null)
            {
                SetMousePosition();
            }
            else
            {
                MessageBox.Show("試圖引用未執行個體化的對象!");
            }
        }
        public void Print_SetMousePosition()
        {
            if (IsErr)
            {
                Cursor.Position =new Point(X,Y);
                MessageBox.Show("金額輸入有誤!");
            }
            IsErr = false;
        }

        private void btnPreview_Click(object sender, EventArgs e)
        {
            printDocument1.DocumentName = "中國建設銀行國際匯款申請單";
            printPreviewDialog1.Document = printDocument1;
            printPreviewDialog1.ShowDialog();
        }

        private void btnPrint_Click(object sender, EventArgs e)
        {
            printDocument1.DocumentName = "中國建設銀行國際匯款申請單";
            printDialog1.Document = printDocument1;
            if (printDialog1.ShowDialog() != DialogResult.Cancel)
            {
                try
                {
                    printDocument1.Print();
                }
                catch (Exception ee)
                {
                    MessageBox.Show("列印失敗！"+ee.Message);
                }
            }
        }
        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            Font titleFont = new Font("黑體", 12, FontStyle.Underline);
            e.Graphics.DrawString("中國建設銀行國際匯款申請單(此標題不列印)", titleFont, Brushes.Black, 300, 50);
            e.Graphics.DrawString(this.txtUint.Text, this.txtUint.Font, Brushes.Black, 200, 125);
            e.Graphics.DrawString(this.txtChactor.Text, this.txtChactor.Font, Brushes.Black, 400, 125);

        }

        private void Print_Load(object sender, EventArgs e)
        {
            this.FormBorderStyle = FormBorderStyle.None; //設定視窗邊框
            this.WindowState = FormWindowState.Maximized; //設定程式最大化         

        }

///////////////////////////////////////

////////////////////////////////////     【此函數為網上引用】

        #region 轉換人民幣大小金額        

        ///  <summary>  
        /// 轉換人民幣大小金額 
        ///  </summary>  
        ///  <param name="num"> 金額 </param>  
        ///  <returns> 返回大寫形式 </returns>  
        public static string NumToCNum(decimal num)
        {
            string str1 = "零壹貳三肆伍陸柒捌玖";            //0-9所對應的漢字 
            string str2 = "萬仟佰拾億仟佰拾萬仟佰拾元角分"; //數字位所對應的漢字 
            string str3 = "";    //從原num值中取出的值 
            string str4 = "";    //數位字串形式 
            string str5 = "";  //人民幣大寫金額形式 
            int i;    //迴圈變數 
            int j;    //num的值乘以100的字串長度 
            string ch1 = "";    //數位漢語讀法 
            string ch2 = "";    //數字位的漢字讀法 
            int nzero = 0;  //用來計算連續的零值是幾個 
            int temp;            //從原num值中取出的值 

            num = Math.Round(Math.Abs(num), 2);    //將num取絕對值並四捨五入取2位小數 
            str4 = ((long)(num * 100)).ToString();        //將num乘100並轉換成字串形式 
            j = str4.Length;      //找出最高位 
            if (j > 15) { return "溢出"; }
            str2 = str2.Substring(15 - j);   //取出對應位元的str2的值。如：200.55,j為5所以str2=佰拾元角分 

            //迴圈取出每一位需要轉換的值 
            for (i = 0; i < j; i++)
            {
                str3 = str4.Substring(i, 1);          //取出需轉換的某一位的值 
                temp = Convert.ToInt32(str3);      //轉換為數字 
                if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
                {
                    //當所取位元不為元、萬、億、萬億上的數字時 
                    if (str3 == "0")
                    {
                        ch1 = "";
                        ch2 = "";
                        nzero = nzero + 1;
                    }
                    else
                    {
                        if (str3 != "0" && nzero != 0)
                        {
                            ch1 = "零" + str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                        else
                        {
                            ch1 = str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                    }
                }
                else
                {
                    //該位是萬億，億，萬，元位等關鍵位 
                    if (str3 != "0" && nzero != 0)
                    {
                        ch1 = "零" + str1.Substring(temp * 1, 1);
                        ch2 = str2.Substring(i, 1);
                        nzero = 0;
                    }
                    else
                    {
                        if (str3 != "0" && nzero == 0)
                        {
                            ch1 = str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                        else
                        {
                            if (str3 == "0" && nzero >= 3)
                            {
                                ch1 = "";
                                ch2 = "";
                                nzero = nzero + 1;
                            }
                            else
                            {
                                if (j >= 11)
                                {
                                    ch1 = "";
                                    nzero = nzero + 1;
                                }
                                else
                                {
                                    ch1 = "";
                                    ch2 = str2.Substring(i, 1);
                                    nzero = nzero + 1;
                                }
                            }
                        }
                    }
                }
                if (i == (j - 11) || i == (j - 3))
                {
                    //如果該位是億位或元位，則必須寫上 
                    ch2 = str2.Substring(i, 1);
                }
                str5 = str5 + ch1 + ch2;

                if (i == j - 1 && str3 == "0")
                {
                    //最後一位（分）為0時，加上“整” 
                    str5 = str5 + '整';
                }
            }
            if (num == 0)
            {
                str5 = "零元整";
            }
            return str5;
        }
        #endregion

        private void txtUint_TextChanged(object sender, EventArgs e)
        {
            X = Cursor.Position.X;
            Y = Cursor.Position.Y;
            try
            {
                txtChactor.Text = NumToCNum(Convert.ToDecimal(txtUint.Text.Trim()));
            }
            catch
            {
                txtUint.Focus();
                IsErr = true;
            }
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {           
            OnSetMousePosition();           
        }
    }
}