92 lines
3.2 KiB
VB.net
92 lines
3.2 KiB
VB.net
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Imports MySql.Data.MySqlClient
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Public Class frmNaCHotseatSubject
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'Declares the variable used to store the chosen SubjectID
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Dim SubjectID As Integer
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'Subroutine runs on form load
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Private Sub frmNaCHotseatSubject_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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'Runs the OpenDB subroutine
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OpenDB()
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'Runs the Populate subroutine
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Populate()
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End Sub
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'Subroutine runs then the okay button is clicked
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Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click
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'If everything has been selected...
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If (cmboDifficulty.SelectedItem <> "") And (cmboSubject.SelectedItem <> "") And (cmboTopic.SelectedItem <> "") Then
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'Sets the chosen subject, difficulty and topic variables
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NaCSubject = SubjectID
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NaCDifficulty = cmboDifficulty.SelectedItem
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NaCTopic = cmboTopic.SelectedItem
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'Shows the Connect Four hotseat player selection form
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frmNaCHotseatPlayerSelect.Show()
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'Closes this form
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Me.Close()
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Else
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'Otherwise display an error message
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MsgBox("Incorrect values")
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End If
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End Sub
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'Subroutine runs when called at form load
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Sub Populate()
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Dim sql As String
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Dim dbcomm As MySqlCommand
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Dim dbread As MySqlDataReader
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sql = "SELECT * FROM tblsubjects;"
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dbcomm = New MySqlCommand(sql, DBConn)
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dbread = dbcomm.ExecuteReader()
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While dbread.Read
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cmboSubject.Items.Add(dbread("Subject"))
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End While
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dbread.Close()
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End Sub
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'Subroutine runs when the selected item of the subject combobox is changed
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Private Sub cmboSubject_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmboSubject.SelectedIndexChanged
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'Declares the StreamReader used to read the topic text file
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Dim Reader As System.IO.StreamReader
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'Enables the topic combobox and clears it of any data
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cmboTopic.Enabled = True
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cmboTopic.Items.Clear()
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'Sets the path to where the file is
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Reader = My.Computer.FileSystem.OpenTextFileReader(cmboSubject.SelectedItem & "Topics.txt")
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'Whilst not at the end of the text file...
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While Not Reader.EndOfStream
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'Add the topic to the combobox
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cmboTopic.Items.Add(Reader.ReadLine)
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End While
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'Closes the streamreader
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Reader.Close()
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Dim sql As String
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Dim dbcomm As MySqlCommand
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Dim dbread As MySqlDataReader
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sql = "SELECT * FROM tblsubjects WHERE Subject='" & cmboSubject.SelectedItem & "';"
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dbcomm = New MySqlCommand(sql, DBConn)
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dbread = dbcomm.ExecuteReader()
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While dbread.Read
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SubjectID = dbread("SubjectID")
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End While
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dbread.Close()
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End Sub
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'Subroutine runs when the cancel button is clicked
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Private Sub btnCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancel.Click
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'Shows the Noughts and Crosses hotseat login form
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frmNaCHotseatLogin.Show()
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'Closes this form
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Me.Close()
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End Sub
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End Class
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