57 lines
2.4 KiB
VB.net
57 lines
2.4 KiB
VB.net
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Imports MySql.Data.MySqlClient
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Public Class frmAddSubject
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'Subroutine runs when the form loads
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Private Sub frmAddSubject_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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'Establishes the connection to the database
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OpenDB()
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End Sub
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'Subroutine runs when the add subject button is clicked
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Private Sub btnAddSubject_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddSubject.Click
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'Declares the variable used for detecting invalid data entry
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Dim Errors As String = ""
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'Declares the variable used for getting the result of the message box
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Dim Result As MsgBoxResult
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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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'Assembles an error report if any invalid data entry detected
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If txtSubjectName.Text = "" Then
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Errors = Errors & "No subject name input" & vbCrLf
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End If
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'If no invalid data entry is detected...
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If Errors = "" Then
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'Displays a validation message box before saving the data to the database
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Result = MsgBox("Are you sure all these details are correct? Remember, spelling is vital." & vbCrLf & vbCrLf & "Details:" & vbCrLf & txtSubjectName.Text, MsgBoxStyle.YesNo)
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'If the data is approved by the user...
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If Result = MsgBoxResult.Yes Then
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'Builds SQL query to execute
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sql = "INSERT INTO `cl51-ben`.`tblsubjects` (`Subject`) VALUES ('" & txtSubjectName.Text & "');"
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dbcomm = New MySqlCommand(sql, DBConn)
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dbread = dbcomm.ExecuteReader()
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dbread.Close()
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'Creates the topics text file for the subject
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Dim file As System.IO.FileStream
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file = System.IO.File.Create(txtSubjectName.Text & "Topics.txt")
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file.Close()
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End If
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'If any invalid data entry is detected...
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Else
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'Displays a message box with any detected invalid data entry
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MsgBox("Invalid input:" & vbCrLf & vbCrLf & Errors)
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End If
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End Sub
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'Subroutine runs when the subject name text box is clicked
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Private Sub txtSubjectName_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtSubjectName.Click
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'Blanks out the text box
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txtSubjectName.Text = ""
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End Sub
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End Class
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