Ich habe eine einfache Frage. Alles, was ich tun muss, ist, die Array-Informationen aus dem ausgewählten Kombinationsfeld zu holen. Ich weiß über combobox.selectedindex, aber das ist nicht mein Problem. Ich muss die Array-Informationen abrufen. Sobald ich den Namen des Schülers gewählt habe, wird der ursprüngliche Grad und der Grad des gebogenen Buchstabens angezeigt. Ich habe die Mathematik schon gemacht, ich habe alles außer diesem gemacht. Hier ist mein Code.Abrufen von Array-Informationen aus dem ausgewählten Combobox-Objekt.
Private Sub OpenToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles OpenToolStripMenuItem.Click
Dim Line_String As String
Dim ArraySize_Integer As Integer = 0
Dim Grades_StreamReader As IO.StreamReader
Dim i As Integer = 0
Dim GradesFile_String As String = "Grades.txt" 'To hold the filename for opening
Dim DialogResponse As DialogResult
Dim x_Integer As Integer
Dim Mean_Decimal As Double = 0
Dim Total_Integer As Double = 0
Dim sum As Double
Dim stDev As Double
Dim x As Integer
Dim y As Integer
Dim orgScore As Integer
'Prompt to open the file
'Set the initial folder to display
OpenFileDialog1.InitialDirectory = IO.Directory.GetCurrentDirectory
'Open the file
With OpenFileDialog1
'Begin in the current folder
.InitialDirectory = Directory.GetCurrentDirectory()
.FileName = "Grades.txt"
.Title = "Select File or Directory for File"
'Filter to show only .txt files
OpenFileDialog1.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*"
'Display the open file dialog box
DialogResponse = .ShowDialog()
End With
'Get the filename
GradesFile_String = OpenFileDialog1.FileName
'Connect to the file
Grades_StreamReader = IO.File.OpenText(GradesFile_String)
'Read the file into a structure array until it runs out of data
Do Until Grades_StreamReader.Peek = -1
'Raed the data
Line_String = Grades_StreamReader.ReadLine
'Split the line into the fields
StringArray_String = Line_String.Split(","c)
'Dynamically size the array of structures
ReDim Preserve StudentData_Person(ArraySize_Integer)
'Assign the fields to the structure, trimming the space
StudentData_Person(ArraySize_Integer).Name_String = StringArray_String(0).Trim
StudentData_Person(ArraySize_Integer).Grade_String = StringArray_String(1).Trim
'Increment for the next array element
ArraySize_Integer += 1
'Populate the combo box
Students_ComboBox.Items.Add(StringArray_String(0))
Loop
'Close the file
Grades_StreamReader.Close()
'Count the scores
'Convert from String to Integer
Scores_TextBox.Text = ArraySize_Integer.ToString
'Calculate the mean
If StudentData_Person.Length > 0 Then
For x_Integer = 0 To StudentData_Person.Length - 1
Total_Integer += CInt(StudentData_Person(x_Integer).Grade_String)
Next
Mean_Decimal = Total_Integer/StudentData_Person.Length
End If
Mean_TextBox.Text = Mean_Decimal.ToString
'Calculate the Standard Deviation
If StudentData_Person.Length > 0 Then
For x = 0 To StudentData_Person.Length - 1
sum += ((CInt(StudentData_Person(x).Grade_String) - Mean_Decimal)^2)
Next
stDev = Math.Round(Math.Sqrt(sum/(x - 1)), 2)
End If
stDev_TextBox.Text = stDev.ToString
'Get information from ComboBox Selected Entry
Students_ComboBox.SelectedIndex
'Determine letter grade
For y = 0 To StudentData_Person.Length
If CInt(StudentData_Person(x).Grade_String) >= Mean_Decimal + (1.5 * stDev) Then
CurvedGrade_TextBox.Text = "A"
End If
If (Mean_Decimal + (0.5 * stDev)) <= CInt(StudentData_Person(x).Grade_String) And CInt(StudentData_Person(x).Grade_String) < (Mean_Decimal + (1.5 * stDev)) Then
CurvedGrade_TextBox.Text = "B"
End If
If (Mean_Decimal - (0.5 * stDev)) <= CInt(StudentData_Person(x).Grade_String) And CInt(StudentData_Person(x).Grade_String) < (Mean_Decimal + (1.5 * stDev)) Then
CurvedGrade_TextBox.Text = "C"
End If
If (Mean_Decimal - (1.5 * stDev)) <= CInt(StudentData_Person(x).Grade_String) And CInt(StudentData_Person(x).Grade_String) < (Mean_Decimal + (1.5 * stDev)) Then
CurvedGrade_TextBox.Text = "D"
End If
If CInt(StudentData_Person(x).Grade_String) < (Mean_Decimal - (1.5 * stDev)) Then
CurvedGrade_TextBox.Text = "F"
End If
Next
End Sub
End Class
Ich würde auch dann müssen die Informationen aus diesem und berechnen ihre Punktzahl holen als gegeben und nach hinten schieben, um die Textfelder, die ich tun kann.
Würde ich nur
originalscore_textbox.text = StudentData_Person(SelectedIndex)
curvedgrade_textbox.text = 'something like what's above this line
oder so ähnlich, dass ich weiß, dass auf jeden Fall falsch ich gerade zeigt y'all mein Konzept des Denkens. Irgendwelche Fragen bitte fragen Ich werde mein bestes versuchen, sie zu erklären. Aber das ist buchstäblich alles was ich brauche und ich bin fertig mit meinem Programm haha.