VB学生信息管理系统论文 第7页
'Combo1.AddItem ("女")
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
End Sub

Private Sub Text1_Change()

End Sub
课程统计分析（如：界面如图六）
 （图六）

代码如下：
Private Sub Command1_Click()
Dim SQLoriginal As String
Dim SQLadd As String
Dim SQLorder As String
Dim strSql As String
 
SQLoriginal = "SELECT * FROM 课程表 "
SQLadd = "WHERE 专业=专业 AND 课程名称=课程名称 "
SQLorder = ""

If Check1.Value = 1 And Not IsNull(Text1) Then
    SQLadd = SQLadd + "and 专业='" + Text1 + "'"
End If
 
If Check2.Value = 1 And Not IsNull(Combo1) Then
    SQLadd = SQLadd + "and 课程性质='" + Combo1 + "'"
End If

'If Check3.Value = 1 And Not IsNumeric(Text2) Then
    'SQLadd = SQLadd + "and 课时='" + Text2 + "'"
'End If

If Check4.Value = 1 And Not IsNull(Text3) Then
    SQLadd = SQLadd + "and 课程名称='" + Text3 + "'"
End If

strSql = SQLoriginal + SQLadd + SQLorde
If Dat_Main.rsDat_Grean.State = 1 Then
    Dat_Main.rsDat_Grean.Close
End If
Dat_Main.rsDat_Grean.Open strSql
Dat_Grean.Show vbModal
Text1.Text = ""
Combo1.Text = ""
'Text2.Text = ""
Text3.Text = ""
End Sub

Private Sub Command2_Click()
    Unload Me
End Sub

Private Sub Form_Load()
Text1.Text = ""
'Text2.Text = ""
Text3.Text = ""
Combo1.Text = ""
Combo1.AddItem ("必修")
Combo1.AddItem ("选修")
Combo1.AddItem ("自开")
End Sub

Private Sub Text3_Change()

End Sub
成绩统计分析（如：界面如图七）
 （图七）
代码如下：
Private Sub Command1_Click()
Dim SQLoriginal As String
Dim SQLadd As String
Dim SQLorder As String
Dim strSql As String
 
On Error Resume Next
SQLoriginal = "SELECT * FROM 成绩表 "
SQLadd = "WHERE 学号=学号 AND 姓名=姓名 "
SQLorder = ""

If Check1.Value = 1 And IsNumeric(Text1) Then
    SQLadd = SQLadd + "and 学号='" + Text1 + "'"
End If
 
If Check2.Value = 1 And Not IsNull(Text2) Then
    SQLadd = SQLadd + "and 姓名='" + Text2 + "'"
End If

If Check3.Value = 1 And Not IsNull(Text3) Then
    SQLadd = SQLadd + "and 考试科目='" + Text3 + "'"
End If

If Check4.Value = 1 Then
    SQLadd = SQLadd + "and 科目分数<60"
End If

strSql = SQLoriginal + SQLadd + SQLorde
If Dat_Main.rsDat_ChengJ.State = 1 Then
    Dat_Main.rsDat_ChengJ.Close
End If
    Dat_Main.rsDat_ChengJ.Open strSql
    Dat_ChengJ.Show vbModal
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
End Sub

Private Sub Command2_Click()
    Unload Me
End Sub

Private Sub Form_Load()
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
'Text4.Text = ""
End Sub

Private Sub Text1_Change()

End Sub
交费统计分析（如：界面如图八）
 （图八）
代码如下：
Private Sub Command1_Click()
Dim SQLoriginal As String
Dim SQLadd As String
Dim SQLorder As String
Dim strSql As String
 
SQLoriginal = "SELECT 学号,姓名,学期,本学期应交费用,实际交费,本次欠费 FROM 交费表 "
SQLadd = "WHERE 学号=学号 AND 姓名=姓名 "
SQLorder = ""

If Check1.Value = 1 And IsNumeric(Text1) Then
    SQLadd = SQLadd + "and 学号='" + Text1 + "'"
End If
 
If Check2.Value = 1 And Not IsNull(Text2) Then
    SQLadd = SQLadd + "and 姓名='" + Text2 + "'"
End If

If Check3.Value = 1 And IsNumeric(Text3) Then
    SQLadd = SQLadd + "and 实际交费='" + Text3 + "'"
End If

If Check4.Value = 1 And IsNumeric(Text4) Then
    SQLadd = SQLadd + "and 本次欠费='" + Text4 + "'"
End If

strSql = SQLoriginal + SQLadd + SQLorde
If Dat_Main.rsDat_JiaoF.State = 1 Then

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