未實現的異常由用戶代碼未處理

每次嘗試打印時顯示錯誤。它說「未實現的異常未被用戶代碼處理」。如何解決這個問題！這裏是我的代碼未實現的異常由用戶代碼未處理

namespace RunwayMedlinc 
{ 
public partial class patient : Form 
{ 
    Print print; 
    MySqlConnection con; 
    String sql; 
    MySqlCommand cmd; 
    MySqlDataAdapter data, data2, data3; 
    DataTable table = new DataTable(); 
    DataTable table2 = new DataTable(); 
    DataTable table3 = new DataTable(); 
    DataSet da = new DataSet(); 
    int age; 

    public patient() 
    { 
     InitializeComponent(); 
    } 

    public void view() 
    { 
    try 
     { 
      sql = "select p.mrn AS 'MRN', pp.name AS 'PATIENT NAME', pp.bday AS 'BIRTHDAY', p.age AS 'AGE', pp.gender AS 'GENDER', p.admit AS 'ADMIT DATE', p.discharge AS 'DISCHARGE DATE', p.md AS 'PHYSICIAN'FROM p inner join pp ON p.mrn=pp.mrn where admit like'%" + year.Text + "%' and admit like'%" + month.Text + "%'"; 
      cmd = new MySqlCommand(sql, con); 
      data.SelectCommand = cmd; 
      pview.DataSource = table; 
      table.Clear(); 
      data.Fill(table); 
      pview.DataSource = table; 
     } 
     catch (Exception exx) 
     { 
      MessageBox.Show(exx.Message, "Error"); 
     } 
    } 

    public void bew() 
    { 
     try 
     { 
      sql = "select p.mrn AS 'MRN', pp.name AS 'PATIENT NAME', pp.bday AS 'BIRTHDAY', p.age AS 'AGE', pp.gender AS 'GENDER', p.admit AS 'ADMIT DATE', p.discharge AS 'DISCHARGE DATE', p.md AS 'PHYSICIAN'FROM p inner join pp ON p.mrn=pp.mrn where admit like'%" + year2.Text + "%' and admit like'%" + month2.Text + "%'"; 
      cmd = new MySqlCommand(sql, con); 
      data2.SelectCommand = cmd; 
      pview2.DataSource = table2; 
      table2.Clear(); 
      data2.Fill(table2); 
     } 
     catch (Exception exx) 
     { 
      MessageBox.Show(exx.Message, "Error"); 
     } 
    } 

    private void search_Enter(object sender, EventArgs e) 
    { 
     if (search.ForeColor == Color.Gray) 
     { 
      search.Clear(); 
      search.ForeColor = Color.Black; 
     } 
    } 

    private void search_Leave(object sender, EventArgs e) 
    { 
     if (search.Text == "") 
     { 
      search.ForeColor = Color.Gray; 
      search.Text = "SEARCH PATIENT..."; 
     } 
    } 

    private void search2_Enter(object sender, EventArgs e) 
    { 
     if (search2.ForeColor == Color.Gray) 
     { 
      search2.Clear(); 
      search2.ForeColor = Color.Black; 
     } 
    } 

    private void search2_Leave(object sender, EventArgs e) 
    { 
     if (search2.Text == "") 
     { 
      search2.ForeColor = Color.Gray; 
      search2.Text = "SEARCH PATIENT..."; 
     } 
    } 

    private void timer1_Tick(object sender, EventArgs e) 
    { 
     time.Text = DateTime.Now.ToString("h:mm:ss tt"); 
     date.Text = DateTime.Now.ToString("MMMM d, yyyy"); 
    } 

    private void patient_Load(object sender, EventArgs e) 
    { 
     con = new MySqlConnection(); 
     con.ConnectionString = "server=Localhost;" + "username=root;" + "password=;" + "database=runway"; 
     con.Open(); 
     sql = "select mrn from p"; 
     cmd = new MySqlCommand(sql, con); 
     data = new MySqlDataAdapter(); 
     data2 = new MySqlDataAdapter(); 

     month.Text = Convert.ToString(DateTime.Now.ToString("MMMM")); 
     year.Text = Convert.ToString(DateTime.Now.ToString("yyyy")); 

     month2.Text = Convert.ToString(DateTime.Now.ToString("MMMM")); 
     year2.Text = Convert.ToString(DateTime.Now.ToString("yyyy")); 

     view(); 

     bew(); 
    } 

    private void clear_Click(object sender, EventArgs e) 
    { 
     mrn.Clear(); 
     name.Clear(); 
     phy.Clear(); 
     m.Checked = false; 
     f.Checked = false; 
     bdate.Value = DateTime.Now; 
     admit.Value = DateTime.Now; 
     disch.Value = DateTime.Now; 

     add.Enabled = true; 
     mrn.ReadOnly = false; 
     name.ReadOnly = false; 
     phy.ReadOnly = false; 
     m.Enabled = true; 
     f.Enabled = true; 
     bdate.Enabled = true; 
     admit.Enabled = true; 
    } 

    private void phy_Enter(object sender, EventArgs e) 
    { 
     if (phy.ReadOnly == false) 
     { 
      phy.Clear(); 
     } 
    } 

    private void add_Click(object sender, EventArgs e) 
    { 
     if (mrn.Text == "" || name.Text == "" || (m.Checked == false && f.Checked == false)) 
     { 
      MessageBox.Show("Please fill out all information.", "", MessageBoxButtons.OK, MessageBoxIcon.Information); 

     } 
     else 
     { 
       DateTime x = admit.Value; 
       DateTime y = bdate.Value; 
       if (x.Month < y.Month || (x.Month == y.Month && x.Day < y.Day)) 
       { 
        age = x.Year - y.Year - 1; 
       } 
       else 
       { 
        age = x.Year - y.Year; 
       } 

       if (m.Checked == true) 
       { 
        if (name.ReadOnly == false) 
        { 
         sql = "insert into pp(mrn, name, gender, bday)values (?a, ?b, ?c, ?d)"; 
         cmd = new MySqlCommand(sql, con); 

         cmd.Parameters.AddWithValue("?a", mrn.Text); 
         cmd.Parameters.AddWithValue("?b", name.Text); 
         cmd.Parameters.AddWithValue("?c", m.Text); 
         cmd.Parameters.AddWithValue("?d", bdate.Text); 
         cmd.ExecuteNonQuery(); 
        } 
       } 

       if (f.Checked == true) 
       { 
        if (name.ReadOnly == false) 
        { 
         sql = "insert into pp(mrn, name, gender, bday)values (?a, ?b, ?c, ?d)"; 
         cmd = new MySqlCommand(sql, con); 

         cmd.Parameters.AddWithValue("?a", mrn.Text); 
         cmd.Parameters.AddWithValue("?b", name.Text); 
         cmd.Parameters.AddWithValue("?c", f.Text); 
         cmd.Parameters.AddWithValue("?d", bdate.Text); 
         cmd.ExecuteNonQuery(); 
        } 
       } 

       sql = "insert into p(mrn, admit, discharge, md, age)values (?a, ?e, ?f, ?g, ?z)"; 
       cmd = new MySqlCommand(sql, con); 

       cmd.Parameters.AddWithValue("?a", mrn.Text); 
       cmd.Parameters.AddWithValue("?e", admit.Text); 
       cmd.Parameters.AddWithValue("?f", null); 
       cmd.Parameters.AddWithValue("?g", phy.Text); 
       cmd.Parameters.AddWithValue("?z", age); 
       cmd.ExecuteNonQuery(); 
       MessageBox.Show("Patient Successfully Added!", "Success!", MessageBoxButtons.OK, MessageBoxIcon.Information); 

       mrn.Clear(); 
       name.Clear(); 
       phy.Text = "MANGASEP, CONCEPCION R."; 
       m.Checked = false; 
       f.Checked = false; 
       bdate.Value = DateTime.Now; 
       admit.Value = DateTime.Now; 
       disch.Value = DateTime.Now; 

       month2.Text = Convert.ToString(DateTime.Now.ToString("MMMM")); 
       year2.Text = Convert.ToString(DateTime.Now.ToString("yyyy")); 
       bew(); 

     } 
    } 

    private void search_TextChanged(object sender, EventArgs e) 
    { 
     if (search.ForeColor != Color.Gray) 
     { 
      try 
      { 
       sql = "select p.mrn AS 'MRN', pp.name AS 'PATIENT NAME', pp.bday AS 'BIRTHDAY', p.age AS 'AGE', pp.gender AS 'GENDER', p.admit AS 'ADMIT DATE', p.discharge AS 'DISCHARGE DATE', p.md AS 'PHYSICIAN'FROM p inner join pp ON p.mrn=pp.mrn where admit like'%" + year.Text + "%' and admit like'%" + month.Text + "%' and name like'%" + search.Text + "%'"; 
       cmd = new MySqlCommand(sql, con); 
       data.SelectCommand = cmd; 
       pview.DataSource = table; 
       table.Clear(); 
       data.Fill(table); 
      } 
      catch (Exception exx) 
      { 
       MessageBox.Show(exx.Message, "Error"); 
      } 
     } 
    } 

    private void search2_TextChanged(object sender, EventArgs e) 
    { 
     if (search2.ForeColor != Color.Gray) 
     { 
      try 
      { 
       sql = "select p.mrn AS 'MRN', pp.name AS 'PATIENT NAME', pp.bday AS 'BIRTHDAY', p.age AS 'AGE', pp.gender AS 'GENDER', p.admit AS 'ADMIT DATE', p.discharge AS 'DISCHARGE DATE', p.md AS 'PHYSICIAN'FROM p inner join pp ON p.mrn=pp.mrn where admit like'%" + year2.Text + "%' and admit like'%" + month2.Text + "%' and name like'%" + search2.Text + "%'"; 
       cmd = new MySqlCommand(sql, con); 
       data2.SelectCommand = cmd; 
       pview2.DataSource = table2; 
       table2.Clear(); 
       data2.Fill(table2); 
      } 
      catch (Exception exx) 
      { 
       MessageBox.Show(exx.Message, "Error"); 
      } 
     } 
    } 

    private void pview2_Click(object sender, EventArgs e) 
    { 
     mrn.Text = pview2.SelectedRows[0].Cells[0].Value.ToString(); 
     name.Text = pview2.SelectedRows[0].Cells[1].Value.ToString(); 
     if (pview2.SelectedRows[0].Cells[4].Value.ToString() == "MALE") 
     { 
      m.Checked = true; 
     } 
     else 
     { 
      f.Checked = true; 
     } 
     bdate.Text = pview2.SelectedRows[0].Cells[2].Value.ToString(); 
     admit.Text = pview2.SelectedRows[0].Cells[5].Value.ToString(); 
     phy.Text = pview2.SelectedRows[0].Cells[7].Value.ToString(); 

     add.Enabled = false; 
     mrn.ReadOnly = true; 
     name.ReadOnly = true; 
     phy.ReadOnly = true; 
     m.Enabled = false; 
     f.Enabled = false; 
     bdate.Enabled = false; 
     admit.Enabled = false; 
    } 

    private void update_Click(object sender, EventArgs e) 
    { 
     sql = "Update p set discharge= '" + disch.Text + "' where mrn = '" + mrn.Text + "'"; 
     cmd = new MySqlCommand(sql, con); 
     cmd.ExecuteNonQuery(); 
     MessageBox.Show("Patient Successfuly Updated!"); 

     add.Enabled = true; 
     mrn.Clear(); 
     mrn.ReadOnly = false; 
     name.Clear(); 
     name.ReadOnly = false; 
     phy.Text = "MANGASEP, CONCEPCION R."; 
     phy.ReadOnly = false; 
     m.Checked = false; 
     f.Checked = false; 
     bdate.Value = DateTime.Now; 
     admit.Value = DateTime.Now; 
     disch.Value = DateTime.Now; 

     month2.Text = Convert.ToString(DateTime.Now.ToString("MMMM")); 
     year2.Text = Convert.ToString(DateTime.Now.ToString("yyyy")); 
     bew(); 
    } 

    private void mrn_TextChanged(object sender, EventArgs e) 
    { 
     sql = "Select name, gender, bday from pp where mrn = '" + mrn.Text + "'"; 
     cmd = new MySqlCommand(sql, con); 
     data3 = new MySqlDataAdapter(); 
     data3.SelectCommand = cmd; 
     table3 = new DataTable(); 
     data3.Fill(table3); 

     if (table3.Rows.Count > 0) 
     { 
      name.Text = Convert.ToString(table3.Rows[0][0]); 
      if (Convert.ToString(table3.Rows[0][1]) == "MALE") 
      { 
       m.Checked = true; ; 
      } 
      else 
      { 
       f.Checked = true; 
      } 
      bdate.Value = Convert.ToDateTime(table3.Rows[0][2]); 
      name.ReadOnly = true; 
      m.Enabled = false; 
      f.Enabled = false; 
      bdate.Enabled = false; 

     } 
     else 
     { 
      name.Clear(); 
      m.Checked = false; 
      f.Checked = false; 
      bdate.Value = DateTime.Now; 
      name.ReadOnly = false; 
      m.Enabled = true; 
      f.Enabled = true; 
      bdate.Enabled = true; 
     } 
    } 

    private void year_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     view(); 
    } 

    private void month_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     view(); 
    } 

    private void mrn_KeyPress(object sender, KeyPressEventArgs e) 
    { 

     if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && 
      (e.KeyChar != '.')) 
     { 
      e.Handled = true; 
     } 

     if ((e.KeyChar == '.') && ((sender as TextBox).Text.IndexOf('.') > -1)) 
     { 
      e.Handled = true; 
     } 
    } 

    private void TabControl1_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     month.Text = Convert.ToString(DateTime.Now.ToString("MMMM")); 
     year.Text = Convert.ToString(DateTime.Now.ToString("yyyy")); 

     month2.Text = Convert.ToString(DateTime.Now.ToString("MMMM")); 
     year2.Text = Convert.ToString(DateTime.Now.ToString("yyyy")); 
     search.ForeColor = Color.Gray; 
     search.Text = "SEARCH PATIENT..."; 
     search2.ForeColor = Color.Gray; 
     search2.Text = "SEARCH PATIENT..."; 
     mrn.Clear(); 
     name.Clear(); 
     phy.Text = "MANGASEP, CONCEPCION R."; 
     m.Checked = false; 
     f.Checked = false; 
     bdate.Value = DateTime.Now; 
     admit.Value = DateTime.Now; 
     disch.Value = DateTime.Now; 
    } 

    private void month2_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     bew(); 
    } 

    private void year2_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     bew(); 
    } 

    private bool SetupThePrinting() 
    { 
     PrintDialog MyPrintDialog = new PrintDialog(); 
     MyPrintDialog.AllowCurrentPage = false; 
     MyPrintDialog.AllowPrintToFile = false; 
     MyPrintDialog.AllowSelection = false; 
     MyPrintDialog.AllowSomePages = false; 
     MyPrintDialog.PrintToFile = false; 
     MyPrintDialog.ShowHelp = false; 
     MyPrintDialog.ShowNetwork = false; 
     if (MyPrintDialog.ShowDialog() != DialogResult.OK) 
     return false; 
     dokumento.DocumentName = "List of Patients"; 
     dokumento.PrinterSettings = MyPrintDialog.PrinterSettings; 
     dokumento.DefaultPageSettings = MyPrintDialog.PrinterSettings.DefaultPageSettings; 
     dokumento.DefaultPageSettings.Landscape = false; 
     dokumento.DefaultPageSettings.Margins = new System.Drawing.Printing.Margins(10, 10, 10, 10); 
     dokumento.DefaultPageSettings.Landscape = MyPrintDialog.PrinterSettings.DefaultPageSettings.Landscape; 
     print = new Print(pview, dokumento, true, true, Environment.NewLine + "" + Environment.NewLine + "" + "Runway Medlinc" + Environment.NewLine + "" + Environment.NewLine + "List of Patients" 
     + Environment.NewLine + "" + Environment.NewLine + month.Text + " " + year.Text, new Font("Times New Roman", 12, FontStyle.Bold, GraphicsUnit.Point), Color.Black, true); 
     return true; 
    } 

    private void printer_Click(object sender, EventArgs e) 
     { 
      if (SetupThePrinting()) 
      { 
       PrintPreviewDialog MyPrintPreviewDialog = new PrintPreviewDialog(); 
       MyPrintPreviewDialog.Document = dokumento; 
       MyPrintPreviewDialog.ShowDialog(); 
       dokumento.Print(); 
      } 
     } 

    private void dokumento_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) 
     { 
      bool more = print.DrawDataGridView(e.Graphics); 
      if (more == true) 
      e.HasMorePages = true; 
    } 

} 
}

每次我嘗試打印錯誤出現。它說「未實現的異常未被用戶代碼處理」。如何解決這個問題！和其他類是在這裏

namespace RunwayMedlinc 
{ 
class Print 
{ 
    private System.Windows.Forms.DataGridView pview; 
    private System.Drawing.Printing.PrintDocument dokumento; 
    private bool p; 
    private bool p_2; 
    private string p_3; 
    private System.Drawing.Font font; 
    private System.Drawing.Color color; 
    private bool p_4; 

    public Print(System.Windows.Forms.DataGridView pview, System.Drawing.Printing.PrintDocument dokumento, bool p, bool p_2, string p_3, System.Drawing.Font font, System.Drawing.Color color, bool p_4) 
    { 
     this.pview = pview; 
     this.dokumento = dokumento; 
     this.p = p; 
     this.p_2 = p_2; 
     this.p_3 = p_3; 
     this.font = font; 
     this.color = color; 
     this.p_4 = p_4; 
    } 

    internal bool DrawDataGridView(System.Drawing.Graphics graphics) 
    { 
     throw new NotImplementedException(); 
    } 
} 
}

來源

2017-07-08 Kaneki Ken

您必須Print類實現DrawDataGridView方法。

來源

2017-07-08 07:06:02 Dmitry

如何在Print類中實現DrawDataGridView方法？ –

internal bool DrawDataGridView(System.Drawing.Graphics graphics) 
{ 
    throw new NotImplementedException(); 
}

throw行是造成該問題。您需要刪除該行並在其中添加實現。

來源

2017-07-08 07:07:32 mjwills

仍然不明白.. –

請閱讀https://stackoverflow.com/a/16303753/34092。 – mjwills

作爲一個短期修復，註釋掉'throw new NotImplementedException（）;'行。 – mjwills

PrintDocument本身無法知道您要打印什麼。你已經告訴它格式，但不是內容。

要告訴它的方式是繪製文檔，主要使用System.Drawing命名空間，使用事件的Graphics屬性作爲輸出設備。輸出設備是一個打印機驅動程序，它可以將您的線條，文本等轉換爲合適的代碼，以便在您的特定打印機上進行渲染。後記，PCL，不管。這對你無關緊要。您只需要在虛擬的二維空間中輸出文本，線條和圖像。

所以

把這些方法背

實現DrawDataGridView！只要做一些簡單的，現在讓你知道，它的作品，像

internal bool DrawDataGridView(System.Drawing.Graphics graphics) 
{ 
    graphics.DrawString("Hello world!"); 
}

一旦你的工作，接下來你就必須弄清楚如何正確地呈現文檔的內容。但這可能是另一個SO問題。

來源

2017-07-08 07:56:32

嘗試過..但在graphics.DrawString（「Hello world！」）下面有一條紅線。 –

未實現的異常由用戶代碼未處理

回答

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