組合框陣列選擇顯示

您好我創建了學生和檔次的數組我的問題是我如何使它所以如果我從指數0選擇學生山姆和展示自己的成績的下拉框裏面的第一陣列。我要寫什麼代碼才能將它們結合在一起。如果你能幫助我，我會非常感激。組合框陣列選擇顯示

private void Form1_Load(object sender, EventArgs e) 
    { 
     string[] student = { "Sam", "Dean", "Nick", "Shara", "Kat" }; 
     cboStudent.Items.AddRange(student); 
     cboStudent.SelectedIndex = 0; 
     string[] S1Grade = { "Math: 78", "English: 56", "Bio: 94", "Art: 67", "Science: 64", "PE: 85", "Social: 89" }; 
     cboGrades.Items.AddRange(S1Grade); 
     string[] S2Grade = { "Math: 45", "English: 84", "Bio: 56", "Art: 67", "Science: 78", "PE: 45", "Social: 76" }; 
     cboGrades.Items.AddRange(S2Grade); 
     string[] S3Grade = { "Math: 68", "English: 34", "Bio: 98", "Art: 56", "Science: 55", "PE: 65", "Social: 56" }; 
     cboGrades.Items.AddRange(S3Grade); 
     string[] S4Grade = { "Math: 38", "English: 78", "Bio: 76", "Art: 67", "Science: 34", "PE: 45", "Social: 56" }; 
     cboGrades.Items.AddRange(S4Grade); 
     string[] S5Grade = { "Math: 88", "English: 84", "Bio: 56", "Art: 45", "Science: 56", "PE: 85", "Social: 89" }; 
     cboGrades.Items.AddRange(S5Grade); 
    } 

    private void button1_Click(object sender, EventArgs e) 
    { 
     string selectedStudent = cboStudent.Text; 
     txtSelected.Text = selectedStudent; 
    } 
    private void cboGrades_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     string selectedGrade = cboGrades.Text; 
    }

來源

2014-04-14 TheBoringGuy

你可能會更好做了'Student'類和創造他們的名字和等級屬性。 –

我有兩個組合框，當我選擇一個學生時，有沒有第二個組合框顯示他們評分的數組的方法？ – TheBoringGuy

沒人能幫助我嗎？ – TheBoringGuy

我會用這樣的方法：

public Form1() 
    { 
     InitializeComponent(); 
     string[] student = { "Sam", "Dean", "Nick", "Shara", "Kat" }; 
     cboStudent.Items.AddRange(student); 
     cboStudent.SelectedIndex = 0;   
    } 

    private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     cboGrades.Items.Clear(); 
     cboGrades.Items.AddRange(Selecting(cboStudent.SelectedIndex)); 
    } 


    private string[] Selecting(int index) 
    { 
     string[] arr = null; 
     switch (index) 
     { 
      case 0: arr = new[] { "Math: 78", "English: 56", "Bio: 94", "Art: 67", "Science: 64", "PE: 85", "Social: 89" }; break; 
      case 1: arr = new[] { "Math: 45", "English: 84", "Bio: 56", "Art: 67", "Science: 78", "PE: 45", "Social: 76" }; break; 
      case 2: arr = new[] { "Math: 68", "English: 34", "Bio: 98", "Art: 56", "Science: 55", "PE: 65", "Social: 56" }; break; 
      case 3: arr = new[] { "Math: 38", "English: 78", "Bio: 76", "Art: 67", "Science: 34", "PE: 45", "Social: 56" }; break; 
      case 4: arr = new[] { "Math: 88", "English: 84", "Bio: 56", "Art: 45", "Science: 56", "PE: 85", "Social: 89" }; break; 
      default: arr = null; break;//no correct index; 
     } 
     return arr; 
    }

是什麼好？並設置DropDownStyle爲DropDownList的組合框屬性，因此用戶不能編輯它，像（上加載時間）：

cboStudent.DropDownStyle = ComboBoxStyle.DropDownList;

來源

2014-04-14 16:58:33

哇，你驚人的人感謝很多:) – TheBoringGuy

沒問題。隨時交配。 –

組合框陣列選擇顯示

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