?? dbclass.vb
字號:
?Public Class DBClass
Inherits DBOperation
Shared Sub DelClass(ByVal ClassName As String)
Dim SQLString As String
Dim MSG As String
SQLString = "DELETE FROM tbClass WHERE ClassName ='" & ClassName & "'"
DBOperate(SQLString, MSG)
End Sub
Shared Function AddClass(ByVal ClassName As String) As Boolean
Dim SQLString As String
Dim MSG As String
SQLString = "SELECT * FROM tbClass WHERE ClassName='" & ClassName & "'"
Dim UserTable As DataTable = DBOperation.DBOperate(SQLString, MSG)
If UserTable.Rows.Count >= 1 Then '判斷用戶是否存在
MsgBox("輸入的班級名稱已存在,請重試", MsgBoxStyle.Exclamation, "信息框")
Return False
Else
SQLString = "INSERT INTO tbClass VALUES('" & ClassName & "','" & Date.Now & "')"
DBOperate(SQLString, MSG)
Return True
End If
End Function
Shared Function LoadClass() As DataTable
Dim SQLString As String
Dim MSG As String
SQLString = "SELECT ClassName AS 班級名稱, CreateDate AS 創建日期 FROM tbClass"
Return DBOperate(SQLString, MSG)
End Function
End Class
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