[英]Wanting to change a label using a combo box selection
我正在制作一個程序,讓用戶從組合框中選擇分數/等級,並使用按鈕單擊將為用戶計算答案。 但是由於某種原因,當我按下計算按鈕時,標簽文本根本沒有改變。 如果代碼凌亂或看起來錯誤,我也很抱歉,因為我仍在努力學習。
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 btec_to_ucas
{
public partial class Form1 : Form
{
//These are the values i want displayed on the label
int PPP = 48;
int MPP = 64;
int MMP = 80;
int MMM = 96;
int MMD = 112;
int DDM = 128;
int DDD = 144;
public Form1()
{
InitializeComponent();
}
// below i want whenever the button is pressed it will take the selected answer and display the int onto the label
private void button1_Click(object sender, EventArgs e)
{
{
switch (comboBox1.SelectedIndex)
{
case 0:
if (comboBox1.SelectedIndex == PPP)
{
label1.Text = "48";
}
break;
case 1:
if (comboBox1.SelectedIndex == MPP)
{
label1.Text = "64";
}
break;
case 2:
if (comboBox1.SelectedIndex == MMP)
{
label1.Text = "96";
}
break;
}
}
}
private void label1_Click(object sender, EventArgs e)
{
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
} ```
你的 switch 語句應該是這樣的:
switch (comboBox1.SelectedIndex)
{
case 0:
label1.Text = PPP.ToString();
break;
case 1:
label1.Text = MPP.ToString();
break;
...
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