-1
私にはdatetimepickerを持つプログラムがあります。 ここにスクリーンショットがあります。 
Datetimepickerエラー
問題がある： 到着日が今日の日付に等しい場合 - SQLコマンドはエラーを示しています。私は間違いを防ぐために今日を手動で選択する必要があります。 datetimepickerのフォーマットは "Custom"で、 "dd.MM.yyyy"のようです。ここで
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.OleDb;
using System.Text.RegularExpressions;
namespace OldCityInn_v0._3
{
public partial class mainform : Form
{
private OleDbConnection connection = new OleDbConnection();
public mainform(string user)
{
InitializeComponent();
connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\Hp\Desktop\DataBases\oldcityinn.accdb;
Persist Security Info=False;";
label2.Text = user;
}
private void button3_Click(object sender, EventArgs e)
{
}
private void mainform_Load(object sender, EventArgs e)
{
editbtn.Visible = false;
/*************************************/
tabPage1.Text = @"Arrival";
tabPage2.Text = @"In House";
tabPage3.Text = @"Departure";
/* -------------------------------- */
reservebtn.Text = "Reservation";
managementbtn.Text = "Hotel Management";
availabilitybtn.Text = "Availability";
roomingbtn.Text = "Rooming List";
infobtn.Text = "Information About Software";
logoutbtn.Text = "Logout";
closebtn.Text = "Close";
/**************************************/
availabilitybtn.Enabled = false;
/* ---------------------------------- */
reservationpanel.Visible = false;
mngmntpanel.Visible = false;
try
{
connection.Open();
toolStripStatusLabel1.Text = "Connected";
connection.Close();
}
catch (Exception ex)
{
MessageBox.Show("Failed to connect the system." + ex);
toolStripStatusLabel1.Text = "Not Ready";
button1.Enabled = false;
}
}
private void button7_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void button6_Click(object sender, EventArgs e)
{
this.Close();
Form1 f1 = new Form1();
f1.Show();
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
try
{
string g_status = "Arrival";
string gname = textBox1.Text;
string gsurname = textBox2.Text;
string gcompany = textBox3.Text;
string gna = comboBox1.SelectedItem.ToString();
string groom = comboBox2.SelectedItem.ToString();
string grate = textBox4.Text.ToString();
string ginfo = richTextBox1.Text;
string gpaidstatus = "Not Paid";
/*--------------*/
TimeSpan difference = this.dateTimePicker2.Value - this.dateTimePicker1.Value;
var days = difference.TotalDays;
label12.Text = days.ToString();
int total = int.Parse(textBox4.Text) * int.Parse(label12.Text);
/*--------------*/
connection.Open();
OleDbCommand command = new OleDbCommand();
command.Connection = connection;
command.CommandText = "INSERT INTO guestreg(g_name,g_surname,g_company,g_ad,g_dd,g_amountofdays,g_na,g_room,g_rate,g_totalrate,g_info,u_added,u_timeadded,g_status,g_paidstatus) VALUES('" + gname + "','" + gsurname + "','" + gcompany + "','" + this.dateTimePicker1.Text + "','" + this.dateTimePicker2.Text + "','" + days + "','" + gna + "','" + groom + "','" + grate + "','"+total+"','" + ginfo + "','" + label2.Text + "','" + dateTimePicker3.Value + "','"+g_status+"','"+gpaidstatus+"')";
command.ExecuteNonQuery();
command.CommandText = "INSERT INTO billing(g_name,g_surname,g_company,g_ad,g_dd,g_amountofdays,g_totalrate) VALUES('" + gname + "','" + gsurname + "','" + gcompany + "'," + this.dateTimePicker1.Value.ToString("dd'.'MM'.'yyyy") + "','" + this.dateTimePicker2.Value.ToString("dd'.'MM'.'yyyy") + "','" + days + "','" + total + "')";
command.ExecuteNonQuery();
MessageBox.Show("Reservation completed! Thank you, "+label2.Text+"!");
connection.Close();
/******************************/
/*****************************/
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
textBox4.Text = "";
richTextBox1.Text = "";
comboBox1.SelectedIndex = -1;
comboBox2.SelectedIndex = -1;
}
catch (Exception ex)
{
MessageBox.Show("Error: " + ex);
}
}
private void reservebtn_Click(object sender, EventArgs e)
{
reservationpanel.Visible = true;
mngmntpanel.Visible = false;
}
private void groupBox3_Enter(object sender, EventArgs e)
{
}
private void billingbtn_Click(object sender, EventArgs e)
{
}
private void searchbd_Click(object sender, EventArgs e)
{
if (tabControl1.SelectedTab == tabControl1.TabPages["tabPage1"])
{
checkinbtn.Enabled = true;
cancelbtn.Enabled = true;
try
{
string dtparrival = this.dateTimePicker4.Text.ToString();
string statusarrival = "Arrival";
string strSql = "SELECT * FROM guestreg WHERE g_status = '" + statusarrival + "' AND g_ad = '" + dtparrival + "'";
OleDbCommand cmd = new OleDbCommand(strSql, connection);
connection.Open();
cmd.CommandType = CommandType.Text;
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataTable scores = new DataTable();
da.Fill(scores);
arrivaldgv.DataSource = scores;
/**************************************************************************/
this.arrivaldgv.Columns[0].Visible = false;
this.arrivaldgv.Columns["g_totalrate"].Visible = false;
this.arrivaldgv.Columns["u_added"].Visible = false;
this.arrivaldgv.Columns["u_timeadded"].Visible = false;
/**************************************************************************/
this.arrivaldgv.Columns["g_name"].HeaderText = "Name"; //1
this.arrivaldgv.Columns["g_surname"].HeaderText = "Surname"; //2
this.arrivaldgv.Columns["g_company"].HeaderText = "Company"; //3
this.arrivaldgv.Columns["g_ad"].HeaderText = "Arrival Day"; //4
this.arrivaldgv.Columns["g_dd"].HeaderText = "Departure Day"; //5
this.arrivaldgv.Columns["g_amountofdays"].HeaderText = "Amount of Days"; //6
this.arrivaldgv.Columns["g_na"].HeaderText = "Number of Adults"; //7
this.arrivaldgv.Columns["g_amountofdays"].HeaderText = "Amount of Days"; //8
this.arrivaldgv.Columns["g_room"].HeaderText = "Room Number"; //9
this.arrivaldgv.Columns["g_rate"].HeaderText = "Rate"; //10
this.arrivaldgv.Columns["g_totalrate"].HeaderText = "Total Rate"; //11
this.arrivaldgv.Columns["g_info"].HeaderText = "Information"; //12
this.arrivaldgv.Columns["u_added"].HeaderText = "User"; //13
this.arrivaldgv.Columns["u_timeadded"].HeaderText = "Time"; //14
this.arrivaldgv.Columns["g_status"].HeaderText = "Status"; //15
this.arrivaldgv.Columns["g_paidstatus"].HeaderText = "Payment";
/**************************************************************************/
connection.Close();
}
catch
{
MessageBox.Show("Please, try again.");
}
}
else if (tabControl1.SelectedTab == tabControl1.TabPages["tabPage2"])
{
try
{
string statusinhouse = "In House";
string strSql = "SELECT * FROM guestreg WHERE g_status = '" + statusinhouse + "'";
OleDbCommand cmd = new OleDbCommand(strSql, connection);
connection.Open();
cmd.CommandType = CommandType.Text;
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataTable scores = new DataTable();
da.Fill(scores);
inhousedgv.DataSource = scores;
/**************************************************************************/
this.inhousedgv.Columns[0].Visible = false;
this.inhousedgv.Columns["g_totalrate"].Visible = false;
this.inhousedgv.Columns["u_added"].Visible = false;
this.inhousedgv.Columns["u_timeadded"].Visible = false;
/**************************************************************************/
this.inhousedgv.Columns["g_name"].HeaderText = "Name"; //1
this.inhousedgv.Columns["g_surname"].HeaderText = "Surname"; //2
this.inhousedgv.Columns["g_company"].HeaderText = "Company"; //3
this.inhousedgv.Columns["g_ad"].HeaderText = "Arrival Day"; //4
this.inhousedgv.Columns["g_dd"].HeaderText = "Departure Day"; //5
this.inhousedgv.Columns["g_amountofdays"].HeaderText = "Amount of Days"; //6
this.inhousedgv.Columns["g_na"].HeaderText = "Number of Adults"; //7
this.inhousedgv.Columns["g_amountofdays"].HeaderText = "Amount of Days"; //8
this.inhousedgv.Columns["g_room"].HeaderText = "Room Number"; //9
this.inhousedgv.Columns["g_rate"].HeaderText = "Rate"; //10
this.inhousedgv.Columns["g_totalrate"].HeaderText = "Total Rate"; //11
this.inhousedgv.Columns["g_info"].HeaderText = "Information"; //12
this.inhousedgv.Columns["u_added"].HeaderText = "User"; //13
this.inhousedgv.Columns["u_timeadded"].HeaderText = "Time"; //14
this.inhousedgv.Columns["g_status"].HeaderText = "Status"; //15
this.inhousedgv.Columns["g_paidstatus"].HeaderText = "Payment";
/**************************************************************************/
connection.Close();
}
catch
{
MessageBox.Show("Please, try again.");
}
}
else if (tabControl1.SelectedTab == tabControl1.TabPages["tabPage3"])
{
string dtparrival = this.dateTimePicker4.Text.ToString();
string strSql = "SELECT * FROM guestreg WHERE g_dd = '" + dtparrival + "'";
OleDbCommand cmd = new OleDbCommand(strSql, connection);
connection.Open();
cmd.CommandType = CommandType.Text;
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataTable scores = new DataTable();
da.Fill(scores);
departuredgv.DataSource = scores;
/**************************************************************************/
this.departuredgv.Columns[0].Visible = false;
this.departuredgv.Columns["g_totalrate"].Visible = false;
this.departuredgv.Columns["u_added"].Visible = false;
this.departuredgv.Columns["u_timeadded"].Visible = false;
/**************************************************************************/
this.departuredgv.Columns["g_name"].HeaderText = "Name"; //1
this.departuredgv.Columns["g_surname"].HeaderText = "Surname"; //2
this.departuredgv.Columns["g_company"].HeaderText = "Company"; //3
this.departuredgv.Columns["g_ad"].HeaderText = "Arrival Day"; //4
this.departuredgv.Columns["g_dd"].HeaderText = "Departure Day"; //5
this.departuredgv.Columns["g_amountofdays"].HeaderText = "Amount of Days"; //6
this.departuredgv.Columns["g_na"].HeaderText = "Number of Adults"; //7
this.departuredgv.Columns["g_amountofdays"].HeaderText = "Amount of Days"; //8
this.departuredgv.Columns["g_room"].HeaderText = "Room Number"; //9
this.departuredgv.Columns["g_rate"].HeaderText = "Rate"; //10
this.departuredgv.Columns["g_totalrate"].HeaderText = "Total Rate"; //11
this.departuredgv.Columns["g_info"].HeaderText = "Information"; //12
this.departuredgv.Columns["u_added"].HeaderText = "User"; //13
this.departuredgv.Columns["u_timeadded"].HeaderText = "Time"; //14
this.departuredgv.Columns["g_status"].HeaderText = "Status"; //15
this.departuredgv.Columns["g_paidstatus"].HeaderText = "Payment";
/**************************************************************************/
connection.Close();
}
}
private void checkinbtn_Click(object sender, EventArgs e)
{
try
{
int selectedrowindex = arrivaldgv.SelectedCells[0].RowIndex;
DataGridViewRow selectedRow = arrivaldgv.Rows[selectedrowindex];
string value = Convert.ToString(selectedRow.Cells["ID"].Value);
try
{
var cmd = new OleDbCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "UPDATE guestreg SET g_status='In House' where ID [email protected]";
cmd.Parameters.AddWithValue("@id", value);
cmd.Connection = connection;
connection.Open();
cmd.ExecuteNonQuery();
{
MessageBox.Show("The guest was checked in. Thank you " + label2.Text);
connection.Close();
}
}
catch (Exception ex)
{
MessageBox.Show("Error: " + ex);
}
}
catch (Exception ex)
{
MessageBox.Show("You can't check in the guest that was already cheked in.");
}
}
private void managementbtn_Click(object sender, EventArgs e)
{
mngmntpanel.Visible = true;
reservationpanel.Visible = false;
}
private void cancelbtn_Click(object sender, EventArgs e)
{
try
{
int selectedrowindex = arrivaldgv.SelectedCells[0].RowIndex;
DataGridViewRow selectedRow = arrivaldgv.Rows[selectedrowindex];
string value = Convert.ToString(selectedRow.Cells["ID"].Value);
try
{
var cmd = new OleDbCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "UPDATE guestreg SET g_status='Canceled' where ID [email protected]";
cmd.Parameters.AddWithValue("@id", value);
cmd.Connection = connection;
connection.Open();
cmd.ExecuteNonQuery();
{
MessageBox.Show("Reservation was canceled. Thank you " + label2.Text);
arrivaldgv.Update();
arrivaldgv.Refresh();
connection.Close();
}
}
catch (Exception ex)
{
MessageBox.Show("Error: " + ex);
}
}
catch (Exception ex)
{
MessageBox.Show("You can't cancel checked in guest.");
}
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
var regex = new Regex(@"[^a-zA-Z0-9\s\b]");
if (regex.IsMatch(e.KeyChar.ToString()))
{
e.Handled = true;
}
}
private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
{
var regex = new Regex(@"[^a-zA-Z0-9\s\b]");
if (regex.IsMatch(e.KeyChar.ToString()))
{
e.Handled = true;
}
}
private void textBox3_KeyPress(object sender, KeyPressEventArgs e)
{
var regex = new Regex(@"[^a-zA-Z0-9\s\b]");
if (regex.IsMatch(e.KeyChar.ToString()))
{
e.Handled = true;
}
}
private void textBox4_KeyPress(object sender, KeyPressEventArgs e)
{
var regex = new Regex(@"[^0-9\s\b]");
if (regex.IsMatch(e.KeyChar.ToString()))
{
e.Handled = true;
}
}
private void richTextBox1_KeyPress(object sender, KeyPressEventArgs e)
{
var regex = new Regex(@"[^a-zA-Z0-9.,$\s\b]");
if (regex.IsMatch(e.KeyChar.ToString()))
{
e.Handled = true;
}
}
private void departuredgv_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
billing blng = new billing();
blng.label12.Text = this.label2.Text;
blng.label13.Text = this.departuredgv.CurrentRow.Cells[0].Value.ToString();
blng.textBox1.Text = this.departuredgv.CurrentRow.Cells[1].Value.ToString();
blng.textBox2.Text = this.departuredgv.CurrentRow.Cells[2].Value.ToString();
blng.textBox3.Text = this.departuredgv.CurrentRow.Cells[3].Value.ToString();
blng.textBox4.Text = this.departuredgv.CurrentRow.Cells[4].Value.ToString();
blng.textBox5.Text = this.departuredgv.CurrentRow.Cells[5].Value.ToString();
blng.textBox6.Text = this.departuredgv.CurrentRow.Cells[6].Value.ToString();
blng.textBox7.Text = this.departuredgv.CurrentRow.Cells[9].Value.ToString();
blng.textBox8.Text = this.departuredgv.CurrentRow.Cells[10].Value.ToString();
blng.ShowDialog();
}
private void inhousedgv_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
billing blng = new billing();
blng.label12.Text = this.label2.Text;
blng.label13.Text = this.inhousedgv.CurrentRow.Cells[0].Value.ToString();
blng.textBox1.Text = this.inhousedgv.CurrentRow.Cells[1].Value.ToString();
blng.textBox2.Text = this.inhousedgv.CurrentRow.Cells[2].Value.ToString();
blng.textBox3.Text = this.inhousedgv.CurrentRow.Cells[3].Value.ToString();
blng.textBox4.Text = this.inhousedgv.CurrentRow.Cells[4].Value.ToString();
blng.textBox5.Text = this.inhousedgv.CurrentRow.Cells[5].Value.ToString();
blng.textBox6.Text = this.inhousedgv.CurrentRow.Cells[6].Value.ToString();
blng.textBox7.Text = this.inhousedgv.CurrentRow.Cells[9].Value.ToString();
blng.textBox8.Text = this.inhousedgv.CurrentRow.Cells[10].Value.ToString();
blng.ShowDialog();
}
private void editbtn_Click(object sender, EventArgs e)
{
}
private void arrivaldgv_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
edit edt = new edit();
edt.label12.Text = this.label2.Text;
edt.label13.Text = this.arrivaldgv.CurrentRow.Cells[0].Value.ToString();
edt.textBox1.Text = this.arrivaldgv.CurrentRow.Cells[1].Value.ToString();
edt.textBox2.Text = this.arrivaldgv.CurrentRow.Cells[2].Value.ToString();
edt.textBox3.Text = this.arrivaldgv.CurrentRow.Cells[3].Value.ToString();
edt.dateTimePicker1.Value = Convert.ToDateTime(this.arrivaldgv.CurrentRow.Cells[4].Value);
edt.dateTimePicker2.Value = Convert.ToDateTime(this.arrivaldgv.CurrentRow.Cells[5].Value);
edt.comboBox2.Text = this.arrivaldgv.CurrentRow.Cells[7].Value.ToString();
edt.comboBox1.SelectedItem = this.arrivaldgv.CurrentRow.Cells[8].Value.ToString();
edt.textBox9.Text = this.arrivaldgv.CurrentRow.Cells[9].Value.ToString();
edt.richTextBox1.Text = this.arrivaldgv.CurrentRow.Cells[11].Value.ToString();
edt.ShowDialog();
}
private void infobtn_Click(object sender, EventArgs e)
{
info inf = new info();
inf.ShowDialog();
}
}
}
これは型キャストの問題でなければなりません。あなたのデータベース内のarrivalDateのデータ型は何ですか？プラスは、到着日のピッカーであるdateTimePicker1です。これに答えると、おそらく私は助けることができるかもしれません。 – devTimmy
パラメータ化されたコマンド、SQLインジェクションおよびストアドプロシージャ/ EntityFrameworkを検索する –
@ user3499361タイプはカスタム（dd.MM.yyyy） –