0
을 리셋하여 좌석 예약을 허용하는 양식을 만들었습니다. 두 개의 드롭 다운 메뉴와 그들이 예약 한 좌석을 표시하는 레이블이 있습니다. 재설정 버튼을 누르면 레이블이 재설정되지만 드롭 다운 메뉴는 선택되지 않습니다. 하나의 메뉴가 "A"이고 다른 하나가 "4"라고 말하면 나는 이것들을 공백으로 재설정해야 누구에게나 도움이 될 수 있습니까? @Rohit 프라 카쉬가 콤보 상자에 대한 선택 재설정 -1 콤보 상자의 selectedIndex의 설정, 질문에 대한 의견에서 지적드롭 다운 콤보 박스 C#
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;
namespace courseworkTask3
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
if (comboBox1.SelectedIndex <= 0)
{
button1.Enabled = false;
}
else
{
button1.Enabled = true;
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
string temp = comboBox1.Text;
int dropBox1enter;
if (int.TryParse(temp, out dropBox1enter))
{
}
int i = 0;
int seatsFound = 0;
int maxFoundSeats = 0;
int maxFoundSeatsStart = 0;
int maxFoundSeatsEnd = 0;
bool[] rowA = new bool[10];
rowA[0] = true;
rowA[1] = true;
rowA[2] = false;
rowA[3] = false;
rowA[4] = false;
rowA[5] = true;
rowA[6] = true;
rowA[7] = false;
rowA[8] = false;
rowA[9] = false;
bool[] rowB = new bool[10];
rowB[0] = true;
rowB[1] = false;
rowB[2] = false;
rowB[3] = false;
rowB[4] = false;
rowB[5] = true;
rowB[6] = true;
rowB[7] = false;
rowB[8] = false;
rowB[9] = false;
bool[] rowC = new bool[10];
rowC[0] = true;
rowC[1] = false;
rowC[2] = false;
rowC[3] = false;
rowC[4] = false;
rowC[5] = true;
rowC[6] = true;
rowC[7] = false;
rowC[8] = false;
rowC[9] = false;
bool[] rowD = new bool[10];
rowD[0] = true;
rowD[1] = false;
rowD[2] = false;
rowD[3] = false;
rowD[4] = false;
rowD[5] = true;
rowD[6] = true;
rowD[7] = false;
rowD[8] = false;
rowD[9] = false;
bool[] rowE = new bool[10];
rowE[0] = true;
rowE[1] = false;
rowE[2] = false;
rowE[3] = false;
rowE[4] = false;
rowE[5] = true;
rowE[6] = true;
rowE[7] = false;
rowE[8] = false;
rowE[9] = false;
if (comboBox2.Text == "A")
{
while (i < 10 && maxFoundSeats < dropBox1enter)
{
if (rowA[i] == false)
{
seatsFound++;
if (seatsFound > maxFoundSeats)
{
maxFoundSeats = seatsFound;
maxFoundSeatsStart = 1 + i - seatsFound;
maxFoundSeatsEnd = i;
}
}
else
{
seatsFound = 0;
}
i++;
} if (maxFoundSeats == dropBox1enter)
{
label4.Text = "Booked for " + maxFoundSeats + " seat(s) in row A starting, seat " + maxFoundSeatsStart + " to seat " + maxFoundSeatsEnd + ".";
}
else
{
label4.Text = "The seats you have selected are unavailable. @The maximum available is " + maxFoundSeats + " in row A From " + maxFoundSeatsStart + " to " + maxFoundSeatsEnd + ".";
label4.Text = label4.Text.Replace("@", System.Environment.NewLine);
}
}
else
{
if (comboBox2.Text == "B")
{
while (i < 10 && maxFoundSeats < dropBox1enter)
{
if (rowB[i] == false)
{
seatsFound++;
if (seatsFound > maxFoundSeats)
{
maxFoundSeats = seatsFound;
maxFoundSeatsStart = 1 + i - seatsFound;
maxFoundSeatsEnd = i;
}
}
else
{
seatsFound = 0;
}
i++;
}
if (maxFoundSeats == dropBox1enter)
{
label4.Text = "Booked for " + maxFoundSeats + " seat(s) in row B starting, seat " + maxFoundSeatsStart + " to seat " + maxFoundSeatsEnd + ".";
}
else
{
label4.Text = "The seats you have selected are unavailable. @The maximum available is " + maxFoundSeats + " in row B From " + maxFoundSeatsStart + " to " + maxFoundSeatsEnd + ".";
label4.Text = label4.Text.Replace("@", System.Environment.NewLine);
}
}
else
{
if (comboBox2.Text == "C")
{
while (i < 10 && maxFoundSeats < dropBox1enter)
{
if (rowC[i] == false)
{
seatsFound++;
if (seatsFound > maxFoundSeats)
{
maxFoundSeats = seatsFound;
maxFoundSeatsStart = 1 + i - seatsFound;
maxFoundSeatsEnd = i;
}
}
else
{
seatsFound = 0;
}
i++;
}
if (maxFoundSeats == dropBox1enter)
{
label4.Text = "Booked for " + maxFoundSeats + " seat(s) in row C starting, seat " + maxFoundSeatsStart + " to seat " + maxFoundSeatsEnd + ".";
}
else
{
label4.Text = "The seats you have selected are unavailable. @The maximum available is " + maxFoundSeats + " in row C From " + maxFoundSeatsStart + " to " + maxFoundSeatsEnd + ".";
label4.Text = label4.Text.Replace("@", System.Environment.NewLine);
}
}
else
{
if (comboBox2.Text == "D")
{
while (i < 10 && maxFoundSeats < dropBox1enter)
{
if (rowD[i] == false)
{
seatsFound++;
if (seatsFound > maxFoundSeats)
{
maxFoundSeats = seatsFound;
maxFoundSeatsStart = 1 + i - seatsFound;
maxFoundSeatsEnd = i;
}
}
else
{
seatsFound = 0;
}
i++;
}
if (maxFoundSeats == dropBox1enter)
{
label4.Text = "Booked for " + maxFoundSeats + " seat(s) in row D starting, seat " + maxFoundSeatsStart + " to seat " + maxFoundSeatsEnd + ".";
}
else
{
label4.Text = "The seats you have selected are unavailable. @The maximum available is " + maxFoundSeats + " in row D From " + maxFoundSeatsStart + " to " + maxFoundSeatsEnd + ".";
label4.Text = label4.Text.Replace("@", System.Environment.NewLine);
}
}
else
{
if (comboBox2.Text == "E")
{
while (i < 10 && maxFoundSeats < dropBox1enter)
{
if (rowE[i] == false)
{
seatsFound++;
if (seatsFound > maxFoundSeats)
{
maxFoundSeats = seatsFound;
maxFoundSeatsStart = 1 + i - seatsFound;
maxFoundSeatsEnd = i;
}
}
else
{
seatsFound = 0;
}
i++;
}
if (maxFoundSeats == dropBox1enter)
{
label4.Text = "Booked for " + maxFoundSeats + " seat(s) in row E starting, seat " + maxFoundSeatsStart + " to seat " + maxFoundSeatsEnd + ".";
}
else
{
label4.Text = "The seats you have selected are unavailable. @The maximum available is " + maxFoundSeats + " in row E From " + maxFoundSeatsStart + " to " + maxFoundSeatsEnd + ".";
label4.Text = label4.Text.Replace("@", System.Environment.NewLine);
}
}
} //end E
} //end D
} //end C
}
}
private void dropBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void dropBox2_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox1.Text != null && comboBox2.Text != null)
{
button1.Enabled = true;
}
}
private void button2_Click(object sender, EventArgs e)
{
label4.Text = "";
}
}
}
집합 combobox.SelectedIndex = -1; –
SelectedText = null 또한 작동해야합니다 (전체 객체가 데이터 소스이고 SelectedValue가 SelectedText 인 경우). 그것은 rohits Selected index에 추가됩니다. – Thomas
Wellcome to StackOverflow. 이 코드를 읽으려면 하루 중 절반이 걸릴 것입니다. 문제를 현지화하십시오. –