组合框阵列选择显示

您好我创建了学生和档次的数组我的问题是我如何使它所以如果我从指数0选择学生山姆和展示自己的成绩的下拉框里面的第一阵列。我要写什么代码才能将它们结合在一起。如果你能帮助我，我会非常感激。组合框阵列选择显示

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; 
    }

来源

2014-04-14 TheBoringGuy

你可能会更好做了'Student'类和创造他们的名字和等级属性。 –

我有两个组合框，当我选择一个学生时，有没有第二个组合框显示他们评分的数组的方法？ – TheBoringGuy

没人能帮助我吗？ – TheBoringGuy

我会用这样的方法：

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; 
    }

是什么好？并设置DropDownStyle为DropDownList的组合框属性，因此用户不能编辑它，像（上加载时间）：

cboStudent.DropDownStyle = ComboBoxStyle.DropDownList;

来源

2014-04-14 16:58:33

哇，你惊人的人感谢很多:) – TheBoringGuy

没问题。随时交配。 –

组合框阵列选择显示

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