VB课程设计[修改版]

第一篇：VB 课程设计
学生成绩管理系统
一、功能描述
首先简单地阐述本人所要实现系统的目的，然后应较详细的叙述本系统所要实现的功能。

************ *******
二、概要设计
1、系统功能模块框图设计
根据功能描述，建立系统的体系结构，即将整个系统分解成若干子功能模块，并用框图表示各功能模块之间的衔接关系，并简要说明各模块的功能。

程序流程框图如图所示：（仅供参考）
图1 程序流程图
2、数据库设计
包括数据库的组成说明，数据库中各表的结构说明（包括字段名、字段类型等），可以包含图片例如下表：
表1 学生信息表
三、详细设计
详细说明主要窗体的实现过程，包括窗体的设计图片及其上所包含的控件名和属性设置；
详细说明主要操作的代码实现过程，包括过程间的调用关系（注：在此给出不完全代码）。

如下所示：
1、账号登录
帐号登录模块中登录与注册两按钮，单击注册会进入注册模块中，单击登录会进入系统进行下一步的操作，帐号文本框与数据库相连接，当在帐号文本框输入帐号后点击登录按钮后，会在数据库中进行查询看数据库中是否会有该帐号，且该帐号的密码是否与密码框中输入的相同，如果相同会进入系统，如果不存在该账号或密码与帐号不相匹配，则会提示“帐号或密码错误”，帐号文本框会得到焦点，让重新输入。

（1）窗体截图（如图2）
图2 注册窗体
（2）功能实现
2、学生信息查询窗体
图3 查询窗体
四、调试中存在的问题及解决方法
包括调试过程中遇到的主要问题及采取的解决方法。

例如：
1、注册账号出现的错误
数据库中帐号被设为主键，当注册时的帐号与数局库中的帐号有相同时就会出错。

2、解决方法：在写入数据库前先进行查询数据库
五、心得体会
本人在本次实习中取得的收获、遇到的困难、如何面对和克服各种困难、本系统的不足之处，将要改进的思想等。

六、参考文献
[1] 罗朝盛. Visual Basic 6.0程序设计教程(第3版). 人民邮电出版社，2009年2月
[2] [3]
七、附录
包括全部源程序清单(程序中应有足够的注释)。

第二篇：VB课程设计
课程设计
学院班级
指导老师
姓名学号成绩
2013年
1 月10
日
一．课程设计题目
学生管理系统
二．功能描述
按设定的用户名密码进行登录后，可按需求进行对数据库中已有的学生信息及成绩进行查询，添加，删除，修改等操作。

三．概要设计
登录界面功能：让用户进行登录。

主界面功能：让用户选择进行哪项操作。

查询学生信息菜单功能：输入学生学号，对该学生的个人信息以
及成绩进行查询，若直接点击查询按钮，则显示全部学生个人信息及成绩。

编辑学生信息菜单功能：可对数据库中已有的学生信息进行查
询，添加，删除，修改等操作。

学生信息维护菜单功能：可对数据库中已有的学生成绩进行查
询，添加，删除，修改等操作。

四．详细设计
五．效果以及存在问题
说明系统的运行效果（附上运行界面图片）、存在哪些不足以及预期的解决办法。

登录界面
登录学生管理系统
按查询条件查询
打开修改学生信息子窗口
学生成绩维护子窗口
垂直窗口排列
关于窗口
不足：1.没有实现用户登录界面中的注册功能
2.没有实现主界面中文件下的新建和保存功能。

六．心得体会
经过几天的苦战，终于把课程设计粗略的做完了。

刚开始做的时候，毫无头绪，一片茫然。

好在书本上有类似的实验，可以供参考。

尽管如此，真正做起项目来，还是有着这样那样的困难，有时一个空格少打都会出错，导致我检查了半天才发现问题所在。

由于VB语法还运用不熟练，很多代码都是模仿书本上的敲的，许多代码往往能编译通过，但很多都会抛出各种异常，让人头疼。

有时系统就给出个有个参数没有被指定值，就可以让人搞的焦头烂额。

因此，写程序真的也很需要强大的耐心，只要熬下去了，当你做出程序时，也会倍有成就感。

目前，程序是基本写完了，平常学的理论都得到了运用，感觉自己的能力也增强了。

一句话，实践才是硬道理。

七．附录代码
（附上各模块代码）
1.登录界面
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button1.Click
Static n As Integer
If txtName.Text = "abc" And txtPassWord.Text = "123" Then
Dim form2 As New Form2()
form2.Show()
Me.Close()
Else
n = n + 1
If n < 5 Then
MsgBox("请输入正确的用户名和密码！", MsgBoxStyle.Critical)
Else
MsgBox("请输入正确的用户名和密码！", MsgBoxStyle.Critical)
Button1.Enabled = False
End If
End If
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button2.Click
Me.Close()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
Button3.Click
Dim form3 As New Form3()
form3.Show()
Me.Close()
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load End Sub End Class
2.查询学生菜单代码
Public Class Form6
Private Sub Form6_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim objConn As New OleDb.OleDbConnection
Dim objDaXS_KC As New OleDb.OleDbDataAdapter
Dim objDaXS As New OleDb.OleDbDataAdapter
Dim objCommXS_KC As New OleDb.OleDbCommand
Dim objCommXS As New OleDb.OleDbCommand
Dim objDsXS_KC As New DataSet
Dim objDsXS As New DataSet
objConn.ConnectionString = "Provider = Microsoft.jet.OLEDB.4.0;data source = 'D:\XSCJ.mdb'"
mandText = " Select * From XS "
objCommXS_mandText = " Select * From XS_KC "
objCommXS_KC.Connection = objConn
objDaXS_KC.SelectCommand = objCommXS_KC
objCommXS.Connection = objConn
objDaXS.SelectCommand = objCommXS
objConn.Open()
objDaXS_KC.Fill(objDsXS_KC, "XS_KC")
objDaXS.Fill(objDsXS, "XS")
objConn.Close()
DataGridView1.DataSource = objDsXS_KC.Tables("XS_KC")
DataGridView2.DataSource = objDsXS.Tables("XS")
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim objConn As New OleDb.OleDbConnection
Dim objDaXS_KC As New OleDb.OleDbDataAdapter
Dim objDaXS As New OleDb.OleDbDataAdapter
Dim objCommXS_KC As New OleDb.OleDbCommand
Dim objCommXS As New OleDb.OleDbCommand
Dim objDsXS_KC As New DataSet
Dim objDsXS As New DataSet
Dim WhereStr As String
WhereStr = ""
If Trim(TxtXH.Text) "" Then
WhereStr = " 学号like " + Trim(TxtXH.Text)
End If
objConn.ConnectionString = "Provider = Microsoft.jet.OLEDB.4.0;data source = 'D:\XSCJ.mdb'" mandText = " Select * From XS "
objCommXS_mandText = " Select * From XS_KC "
If WhereStr "" Then
mandText = mandText & "where" & WhereStr objCommXS_mandText = objCommXS_mandText & "where" & WhereStr
End If
objCommXS_KC.Connection = objConn
objDaXS_KC.SelectCommand = objCommXS_KC
objCommXS.Connection = objConn
objDaXS.SelectCommand = objCommXS
objConn.Open()
objDaXS_KC.Fill(objDsXS_KC, "XS_KC")
objDaXS.Fill(objDsXS, "XS")
objConn.Close()
DataGridView1.DataSource = objDsXS_KC.Tables("XS_KC")
DataGridView2.DataSource = objDsXS.Tables("XS")
End Sub End Class
3编辑学生信息菜单
Public Class Form7
Dim objDs As New DataSet
Dim objxstable As DataTable
Dim objda As New OleDb.OleDbDataAdapter
Dim wherestr As String
Public Sub refreshdata()
objda.Update(objDs, "XS")
objxstable.Clear()
bindgridview(wherestr)
End Sub
Public Sub bindgridview(ByVal strXH As String)
Dim objConn As New OleDb.OleDbConnection
Dim objComm As New OleDb.OleDbCommand
WhereStr = ""
If Trim(TxtXH.Text) "" Then
wherestr = " 学号like" + Trim(TxtXH.Text)
End If
objConn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='D:\XSCJ.mdb'" mandText = " Select * From XS "
If WhereStr "" Then
mandText = mandText & "where" & WhereStr
End If
'把objConn设置为objConn的数据连接
objComm.Connection = objConn
objda.SelectCommand = objComm
'创建INSERT Command
Dim InsCommand As New OleDb.OleDbCommand("INSERT INTO XS(学号,姓名,专业名,性别,出生日期,总学分,备注)VALUES(?,?,?,?,?,?,?)", objConn)
InsCommand.Parameters.Add("学号", OleDb.OleDbType.VarChar, 6, "学号")
InsCommand.Parameters.Add("姓名", OleDb.OleDbType.VarChar, 8, "姓名")
InsCommand.Parameters.Add("专业名", OleDb.OleDbType.VarChar, 10, "专业名")
InsCommand.Parameters.Add("性别", OleDb.OleDbType.VarChar, 2, "性别")
InsCommand.Parameters.Add("出生日期", OleDb.OleDbType.Date, Nothing, "出生日期")
InsCommand.Parameters.Add("总学分", OleDb.OleDbType.Integer, Nothing, "总学分")
InsCommand.Parameters.Add("备注", OleDb.OleDbType.VarChar, Nothing, "备注")
objda.InsertCommand = InsCommand
'创建Delte Command
Dim delcommand As New OleDb.OleDbCommand("DELETE * from XS where 学号=?", objConn)
delcommand.Parameters.Add("学号", OleDb.OleDbType.Char, 6, "学号")
objda.DeleteCommand = delcommand
'创建Update Command
Dim updCommand As New OleDb.OleDbCommand("UPDATE XS SET 学号=?,姓名=?,专业名=?,性别=?,出生日期=?,总学分=?,备注=? WHERE 学号=?", objConn)
updCommand.Parameters.Add("学号", OleDb.OleDbType.VarChar, 6, "学号")
updCommand.Parameters.Add("姓名", OleDb.OleDbType.VarChar, 8, "姓名")
updCommand.Parameters.Add("专业名", OleDb.OleDbType.VarChar, 10, "专业名")
updCommand.Parameters.Add("性别", OleDb.OleDbType.VarChar, 2, "性别")
updCommand.Parameters.Add("出生日期", OleDb.OleDbType.Date, Nothing, "出生日期")
updCommand.Parameters.Add("总学分", OleDb.OleDbType.Integer, Nothing, "总学分")
updCommand.Parameters.Add("备注", OleDb.OleDbType.VarChar, Nothing, "备注")
updCommand.Parameters.Add("学号", OleDb.OleDbType.VarChar, 6, "学号")
objda.UpdateCommand = updCommand
objConn.Open()
'打开数据库连接
objda.Fill(objDs, "XS") '填充数据
objxstable = objDs.Tables("XS")
objConn.Close()
'关闭数据集
'把DataGrid1的DataSource属性设置为刚刚取到的数据表，这样就可以显示数据了
DataGridView1.DataSource = objDs.Tables("XS")
End Sub
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
TxtStuXH.Text = DataGridView1.CurrentRow.Cells.Item(0).Value.ToString '显示学号
TxtStuXM.Text = DataGridView1.CurrentRow.Cells.Item(1).Value.ToString '显示姓名
TxtZY.Text = DataGridView1.CurrentRow.Cells.Item(2).Value.ToString '显示专业
TxtXB.Text = DataGridView1.CurrentRow.Cells.Item(3).Value.ToString '显示性别
TxtCSRQ.Text = DataGridView1.CurrentRow.Cells.Item(4).Value.ToString '显示出生日期
TxtStuZXF.Text = DataGridView1.CurrentRow.Cells.Item(5).Value.ToString '显示总学分
TxtBZ.Text = DataGridView1.CurrentRow.Cells.Item(6).Value.ToString '显示备注
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim objConn As New OleDb.OleDbConnection
Dim objDaXS As New OleDb.OleDbDataAdapter
Dim objCommXS As New OleDb.OleDbCommand
Dim objDsXS As New DataSet
Dim WhereStr As String
WhereStr = ""
If Trim(TxtXH.Text) "" Then
WhereStr = " 学号like " + Trim(TxtXH.Text)
End If
objConn.ConnectionString = "Provider = Microsoft.jet.OLEDB.4.0;data source = 'D:\XSCJ.mdb'" mandText = " Select * From XS "
If WhereStr "" Then
mandText = mandText & "where" & WhereStr
End If
objCommXS.Connection = objConn
objDaXS.SelectCommand = objCommXS
objConn.Open()
objDaXS.Fill(objDsXS, "XS")
objConn.Close()
DataGridView1.DataSource = objDsXS.Tables("XS")
End Sub
Private Sub Form7_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load wherestr = ""
bindgridview(wherestr)
End Sub
Private Sub butAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butAdd.Click
Dim response As MsgBoxResult
response = MsgBox("确定要添加记录吗？", vbOKCancel + vbQuestion, "系统提示")
If response = MsgBoxResult.Ok Then
Dim myRow As DataRow = objxstable.NewRow()
myRow("学号") = TxtStuXH.Text
myRow("姓名") = TxtStuXM.Text
myRow("专业名") = TxtZY.Text
myRow("性别") = TxtXB.Text
myRow("出生日期") = TxtCSRQ.Text
myRow("总学分") = TxtStuZXF.Text
myRow("备注") = TxtBZ.Text
objxstable.Rows.Add(myRow)
refreshdata()
End If
End Sub
Private Sub butEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butEdit.Click Dim response As MsgBoxResult
response = MsgBox("确定要修改记录吗？", vbOKCancel + vbQuestion, "系统提示")
If response = MsgBoxResult.Ok Then '用户选择“确定”
'修改学号
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Item(0) = TxtStuXH.Text
'修改姓名
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Item(1) = TxtStuXM.Text
'修改专业
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Item(2) = TxtZY.Text
'修改性别
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Item(3) = TxtXB.Text
'修改出生日期
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Item(4) = TxtCSRQ.Text
'修改总学分
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Item(5) = TxtStuZXF.Text
'修改备注
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Item(6) = TxtBZ.Text
refreshdata() '更新并刷新显示
End If
End Sub
Private Sub butDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butDelete.Click
Dim response As MsgBoxResult
response = MsgBox("确定要删除记录吗？", vbOKCancel + vbQuestion, "系统提示")
If response = MsgBoxResult.Ok Then '用户选择“确定”
'除学生成绩表当前记录
objxstable.Rows.Item(DataGridView1.CurrentRow.Index).Delete()
refreshdata() '更新并刷新显示
End If
End Sub End Class
4. 学生成绩维护菜单
Public Class Form4
Dim objDs As New DataSet
Dim objXSTable As DataTable
Dim objDa As New OleDb.OleDbDataAdapter
Dim WhereStr As String
Public Sub refreshdata()
objDa.Update(objDs, "XS_KC")
objXSTable.Clear()
bindgridview(WhereStr)
End Sub
Public Sub bindgridview(ByVal strXH As String)
Dim objConn As New OleDb.OleDbConnection
Dim objComm As New OleDb.OleDbCommand
WhereStr = ""
If Trim(TxtXH.Text) "" Then
WhereStr = " 学号like" + Trim(TxtXH.Text)
End If
objConn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='D:\XSCJ.mdb'" mandText = " Select * From XS_KC "
If WhereStr "" Then
mandText = mandText & "where" & WhereStr
End If
'把objConn设置为objConn的数据连接
objComm.Connection = objConn
objDa.SelectCommand = objComm
'创建INSERT Command
Dim InsCommand As New OleDb.OleDbCommand("INSERT INTO XS_KC(学号,课程号,成绩,学
分)VALUES(?,?,?,?)", objConn)
InsCommand.Parameters.Add("学号", OleDb.OleDbType.VarChar, 6, "学号")
InsCommand.Parameters.Add("课程号", OleDb.OleDbType.VarChar, 4, "课程号")
InsCommand.Parameters.Add("成绩", OleDb.OleDbType.Integer, Nothing, "成绩")
InsCommand.Parameters.Add("学分", OleDb.OleDbType.Integer, Nothing, "学分")
objDa.InsertCommand = InsCommand
'创建Delte Command
Dim delcommand As New OleDb.OleDbCommand("DELETE * from XS_KC where 序号=?", objConn)
delcommand.Parameters.Add("序号", OleDb.OleDbType.Char, 6, "序号")
objDa.DeleteCommand = delcommand
'创建Update Command
Dim updCommand As New OleDb.OleDbCommand("UPDATE XS_KC set 学号=?,课程号=?,成绩=?,学分=? where 序号=?", objConn)
updCommand.Parameters.Add("学号", OleDb.OleDbType.VarChar, 6, "学号")
updCommand.Parameters.Add("课程号", OleDb.OleDbType.VarChar, 4, "课程号")
updCommand.Parameters.Add("成绩", OleDb.OleDbType.Integer, Nothing, "成绩")
updCommand.Parameters.Add("学分", OleDb.OleDbType.Integer, Nothing, "学分")
updCommand.Parameters.Add("序号", OleDb.OleDbType.Integer, Nothing, "序号")
objDa.UpdateCommand = updCommand
objConn.Open()
'打开数据库连接
objDa.Fill(objDs, "XS_KC") '填充数据
objXSTable = objDs.Tables("XS_KC")
objConn.Close()
'关闭数据集
'把DataGrid1的DataSource属性设置为刚刚取到的数据表，这样就可以显示数据了
DataGridView1.DataSource = objDs.Tables("XS_KC")
End Sub
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As
System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick txtStuXKID.Text = DataGridView1.CurrentRow.Cells.Item(0).Value.ToString '显示ID
txtStuXH.Text = DataGridView1.CurrentRow.Cells.Item(1).Value.ToString '显示学号
txtStuKCH.Text = DataGridView1.CurrentRow.Cells.Item(2).Value.ToString '显示课程号
txtStuCJ.Text = DataGridView1.CurrentRow.Cells.Item(3).Value.ToString '显示成绩
txtStuXF.Text = DataGridView1.CurrentRow.Cells.Item(4).Value.ToString '显示学分
End Sub
Private Sub btnDdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butAdd.Click Dim response As MsgBoxResult
response = MsgBox("确定要添加记录吗？", vbOKCancel + vbQuestion, "系统提示")
If response = MsgBoxResult.Ok Then
Dim myRow As DataRow = objXSTable.NewRow()
myRow("学号") = txtStuXH.Text
myRow("课程号") = txtStuKCH.Text
myRow("成绩") = txtStuCJ.Text
myRow("学分") = txtStuXF.Text
objXSTable.Rows.Add(myRow)
refreshdata()
End If
End Sub
Private Sub btnEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butEdit.Click
Dim response As MsgBoxResult
response = MsgBox("确定要修改记录吗？", vbOKCancel + vbQuestion, "系统提示")
If response = MsgBoxResult.Ok Then '用户选择“确定”
'修改学号
objXSTable.Rows.Item(DataGridView1.CurrentRow.Index).Item(1) = txtStuXH.Text
'修改课程号
objXSTable.Rows.Item(DataGridView1.CurrentRow.Index).Item(2) = txtStuKCH.Text
' 修改成绩
objXSTable.Rows.Item(DataGridView1.CurrentRow.Index).Item(3) = txtStuCJ.Text
'修改学分
objXSTable.Rows.Item(DataGridView1.CurrentRow.Index).Item(4) = txtStuXF.Text
refreshdata()'更新并刷新显示
End If
End Sub
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butDelete.Click
Dim response As MsgBoxResult
response = MsgBox("确定要删除记录吗？", vbOKCancel + vbQuestion, "系统提示")
If response = MsgBoxResult.Ok Then '用户选择“确定”
'除学生成绩表当前记录
objXSTable.Rows.Item(DataGridView1.CurrentRow.Index).Delete()
refreshdata() '更新并刷新显示
End If
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim objConn As New OleDb.OleDbConnection
Dim objDaXS As New OleDb.OleDbDataAdapter
Dim objCommXS As New OleDb.OleDbCommand
Dim objDsXS As New DataSet
Dim WhereStr As String
WhereStr = ""
If Trim(TxtXH.Text) "" Then
WhereStr = " 学号like " + Trim(TxtXH.Text)
End If
objConn.ConnectionString = "Provider = Microsoft.jet.OLEDB.4.0;data source = 'D:\XSCJ.mdb'"
mandText = " Select * From XS_KC "
If WhereStr "" Then
mandText = mandText & "where" & WhereStr
End If
objCommXS.Connection = objConn
objDaXS.SelectCommand = objCommXS
objConn.Open()
objDaXS.Fill(objDsXS, "XS_KC")
objConn.Close()
DataGridView1.DataSource = objDsXS.Tables("XS_KC")
End Sub
Private Sub Form4_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
WhereStr = ""
bindgridview(WhereStr)
End Sub End Class
5. 主菜单界面代码
Public Class Form2
Private Sub quitMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles quitMenuItem.Click
Me.Close()
End Sub
Private Sub importscoreMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles importscoreMenuItem.Click
Dim form4 As New Form4
form4.MdiParent = Me
form4.WindowState = FormWindowState.Normal
form4.Show()
End Sub
Private Sub updateinfoMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles updateinfoMenuItem.Click
Dim form7 As New Form7
form7.MdiParent = Me
form7.WindowState = FormWindowState.Normal
form7.Show()
End Sub
Private Sub selectinfoMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles selectinfoMenuItem.Click
Dim form6 As New Form6
Form6.MdiParent = Me
form6.WindowState = FormWindowState.Normal
form6.Show()
End Sub
Private Sub cascadeMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cascadeMenuItem.Click
youtMdi(MdiLayout.Cascade)
End Sub
Private Sub horizonMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles horizonMenuItem.Click
youtMdi(MdiLayout.TileHorizontal)
End Sub
Private Sub verticalMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles verticalMenuItem.Click
youtMdi(MdiLayout.TileVertical)
End Sub
Private Sub aboutMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles aboutMenuItem.Click
Dim form5 As New Form5
form5.MdiParent = Me
form5.WindowState = FormWindowState.Normal
form5.Show()
End Sub
Private Sub ToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton1.Click
selectinfoMenuItem.PerformClick()
End Sub
Private Sub ToolStripButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton2.Click
updateinfoMenuItem.PerformClick()
End Sub
Private Sub ToolStripButton3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton3.Click
importscoreMenuItem.PerformClick()
End Sub
Private Sub ToolStripButton4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton4.Click
cascadeMenuItem.PerformClick()
End Sub
Private Sub ToolStripButton5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton5.Click
aboutMenuItem.PerformClick()
End Sub
Private Sub ToolStripButton6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton6.Click
quitMenuItem.PerformClick()
End Sub
Private Sub ToolStripStatusLabel1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripStatusLabel1.Click
aboutMenuItem.PerformClick()
End Sub End Class
八．参考文库
百度文库，百度知道
第三篇：vb课程设计
Visual Basic课程设计报告
题目1：贪吃蛇难度：**** 题目2：难度：指导教师：
姓名：学号：专业：班级：学院：
日期：
目录
1、题目简介................................................................................................... 错误！未定义书签。

2、设计思路与总体方案 (3)
2.1 窗体Form1.vb【设计】................................................................................................... 3 2.2窗体Form2.vb【设计】.................................................................................................. 11 2.3窗体Form3.vb【设计】.................................................................................................. 14 2.4 窗体Form4.vb【设计】................................................................................................. 14 2.5窗体Form5.vb【设计】.................................................................................................... 2.6窗体Form6.vb【设计】.................................................................. 错误！未定义书签。

2.6 标准模块.. (14)
3、设计过程遇到的主要问题及解决方法 (16)
4、设计中尚存的不足分析 (16)
5、心得体会 (17)
6、参考文献 (17)
1.题目简介
贪吃蛇是一种很流行的电子游戏。

如图1所示，一条蛇在棋盘状的格子平面上爬行，由键盘控制其转弯；格子上随机出现五个数字（1~5），当蛇的头部碰到数字时会将数字“吃掉”，蛇的身体会变长。

当蛇的头撞到障碍物时或碰到自己身体时，游戏结束。

游戏结束时，蛇身体越长的分越高。

图1 程序启动时界面如图1所示，游戏平面有20*20个方格构成。

使用回车键可以暂
1 停（如图2所示），蛇爬到边界时，如果未遇到障碍物，会从一侧爬出再从另一侧爬入。

如果运动过程中，其头部碰到障碍物或自己，则被撞死，游戏结束。

图2 如果该用户的成绩超过记录成绩，则会显示图3所示的对话框提示输入用户名，以供记录成绩，排行榜界面如图4所示。

图3
图4
选择“设置”菜单命令，打开图5所示的“设置”对话框。

在该对话框中可以选
2 择不同的障碍物形状，也可指定背景和障碍物颜色。

图5 为了使效果更好，我加了背景音乐和速度控制。

2、设计思路与总体方案
(说明用到哪些控件并进行难点分析，说明所使用到的模块、过程、变量、数组、自定义数据类型及其相互关系，必要时给出系统结构图等图表。

对如下事项逐步进行必要的分析、说明：
程序设计的主要思想，程序功能是如何实现的？
设计了几个程序模块(有几个窗体模块、几个标准模块)，各个功能模块的作者及想到之间的关系(模块间是如何传递信息和数据的，采用什么方式，为什么？)？
程序中定义了哪些主要的变量(分别定义了哪些过程级变量？模块级变量和全局变量)，这些变量起什么作用？是否全局变量？这里不需要给出大段的源程序，只需要给出关键的实现代码即可。

) 2.1 窗体Form1.vb【设计】
这是主界面，但也是最难的环节，之后要用到的控件与显示都要在其基础上发展。

首先我们要将背景网格和蛇身画出来，由于受到了动态添加控件的启发，我用了powerpacks中的ovalshape来构造蛇身，lineshape来构造线，为了满足蛇的身体长长，用到了数组。

由于代码之间有许多调配，在此我所举的代码皆主要起说明作用，实际情况可看源代码。

代码如下：
Public num As Integer = 4 ‘记录蛇的长度，即ovalshape的个数
3 Public j As String‘记录Inputstring的字符串
Public p As Integer = 1‘记录MsgBox所产生的值
Dim w As Integer
Dim d As Integer ‘为键盘方向确定一固定值
Dim recordname As String‘记录玩家名字
Dim bnum As Integer = 1‘记录障碍物的个数
Public recordlist(7) As String ‘记录成绩
Public recordscore(7) As Integer
Public gametime As Integer ‘记录游戏进行所用时间
Public gameinterval As Integer = 200 ‘记录游戏Timer控件interval值
Public score As Integer ‘记录得分
Public direction As Integer
Public line(41) As LineShape
Public food(4) As RectangleShape
Public eye(2) As OvalShape '蛇的眼睛
Public a(num) As OvalShape '蛇的身体
Public word(4) As Label
Imports Microsoft.VisualBasic.PowerPacks Public a(num) As OvalShape ‘a（）为定义蛇身的数组，变量num 用来记录蛇身个数
Public line(41) As LineShape Dim canvas = New Microsoft.VisualBasic.PowerPacks.ShapeContainer
For i = 4 To 0 Step -1 a(i) = New OvalShape
a(i).Size = New Size(20, 20) a(i).Top = 360 a(i).Left = 120 + 20 * i a(i).FillStyle = FillStyle.Solid a(i).FillColor = Color.Yellow a(i).Parent = canvas Next
a(0).FillColor = Color.Red ‘給蛇上色a(0).BackColor = Color.Red Dim i As Integer
canvas.parent = Me.Panel1 For i = 0 To 20 '形成网格,以两点坐标来确定线的位置
line(i) = New LineShape line(i).X1 = 0 line(i).X2 = 400 line(i).Y1 = 20 * i
4 line(i).Y2 = 20 * i line(i).Parent = canvas Next
For i = 21 To 41 line(i) = New LineShape line(i).X1 = 20 * (i21) line(i).Y1 = 0 line(i).Y2 = 400 line(i).Parent =
canvas 蛇已经做好，那么我们可以进行下一步：让蛇随键盘的上下左右运动起来。

这一步曾经困扰我很久，但通过上网我发现每一个键盘都对应着一个代码，如：左37，上38，右39，下40。

首先得让控件响应键盘事件，其次让蛇动，而蛇的运动可看作蛇头移动，蛇身跟随前一个身体。

由此可以用以下代码解决：
Private Sub form_keydown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown Select Case e.KeyCode Case 37 If d 2 Then d = 0 ‘这样能让蛇不往回走
Case 38 If d 1 Then d = 3 Case 39 If d 0 Then d = 2 Case 40 If d 3 Then d = 1 End Select
End Sub Select Case d Case 2 For i = num To 1 Step -1 a(i).Left = a(i1).Top Next
a(0).Left += 20 Case 1 For i = num To 1 Step -1 a(i).Left = a(i1).Top Next
a(0).Top += 20 Case 0 For i = num To 1 Step -1
5 a(i).Left = a(i1).Top Next
a(0).Left -= 20 Case 3 For i = num To 1 Step -1 a(i).Left = a(i1).Top Next
a(0).Top -= 20 End Select 然后我们可以来设置食物来让蛇吃，我用rectangleshape控件来制造食物，就像和画出蛇身一样写，但是每当被吃后它有出现，而且不能出现在蛇身上。

首先，它是随机出现的，我们可用随机函数，然后可通过判断让它不出现在蛇身上。

对于数字1，2，3，4，5；我用lebal控件，然后让其和食物坐标同步，这样看起来就像数字在食物上一样。

代码如下：
For i = 0 To 4 If a(0).Top = food(i).Top And a(0).Left = food(i).Left Then ‘判断是否吃到
score += i + 1 ‘分数增加num += i + 1 ‘蛇身的个数增加food(i).Visible = False word(i).Visible = False
ReDim Preserve food(4) ReDim Preserve word(4) food(i) = New RectangleShape food(i).Size = New Size(20, 20) Randomize() food(i).Left = Int(Rnd() * 20) * 20 ‘随机确定新坐标
food(i).Top = Int(Rnd() * 20) * 20 L2: For g = 0 To num1 If food(i).Left = a(g).Left And food(i).Top = a(g).Top Then
Call setloction(i) GoTo L2 End If
Next
food(i).FillStyle = FillStyle.Solid food(i).Parent = canvas word(i) = New Label word(i).Text = i + 1 word(i).Size = New Size(10, 10)
6 word(i).Top = food(i).Top + 5 word(i).Left = food(i).Left + 5 word(i).Parent = canvas ReDim Preserve a(num)
‘蛇长长，重新定义动态数组
For k = numii1 If a(0).Top = barrier(k).Top And a(0).Left = barrier(k).Left Then
Timer1.Enabled = False a(0).FillColor = Color.Red lifetime -= 1 If score < 3 Then
If lifetime < 1 Then
MsgBox("GAME OVER! ", 64, "贪吃蛇") recordname = InputBox("GAME OVER!" & Chr(13) & "你的成绩为" & Int(score) & "分用时”& _ Int(gameinterval * gametime / 1000) & "秒。

" & Chr(13) & "请留下大名", "贪吃蛇", "无名氏") Else
p = MsgBox("Do you want to continue?", vbYesNo, "生命值" & lifetime) If p = 6 Then
Exit For
End If
End If
Else
8 If lifetime < 1 Then
recordname = InputBox("GAME OVER!" & Chr(13) & "你的成绩为" & Int(score) & "分用时”& _
Int(gameinterval * gametime / 1000) & "秒。

" & Chr(13) & "请留下大名?", "贪吃蛇", "无名氏") Else p = MsgBox("Do you want to continue?", vbYesNo, "生命值" & lifetime) If p = 6 Then
Exit For
End If
End If
End If
Call record() Call initialize() Exit For
End If
Next 想要形成障碍物，在此我们需要用到文件的读操作。

主要代码如下：
FileOpen(1, filelacation, OpenMode.Input) ' 读取墙壁，形成迷宫bnum = 1 Dim L As Integer
Dim T As Integer
For i = 1 To 419 j = InputString(1, 2) If Val(j) = 1 Then
barrier(bnum) = New RectangleShape barrier(bnum).Left = 20 * L barrier(bnum).Top = 20 * T
barrier(bnum).Size = New Size(20, 20) barrier(bnum).FillColor = barriercolor barrier(bnum).FillStyle = FillStyle.Solid barrier(bnum).Parent = canvas bnum += 1 End If
If Val(j) = 0 Then ‘用此方法使读出的内容与坐标对应
End If
If j = vbCrLf Then L -= 1 End If L += 1
9 If L = 20 Then L = 0 : T += 1 End If
Next
FileClose(1) 在此基础上便可调用其它的过程，比较简单。

代码如下：
Private Sub 开始ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 开始ToolStripMenuItem.Click If Timer1.Enabled = False Then Timer1.Enabled = True
Exit Sub
End If
If Timer1.Enabled = True Then Timer1.Enabled = False
End If
End Sub
Private Sub 新开局ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 新开局ToolStripMenuItem.Click Call initialize() End Sub
Private Sub 关于ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 关于ToolStripMenuItem.Click MsgBox("贪吃蛇vb2010.2016.3.20", 64, "版本说明") End Sub
Private Sub 帮助ToolStripMenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 帮助ToolStripMenuItem1.Click Form3.Show() End Sub
Private Sub 设置ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 设置ToolStripMenuItem.Click Form2.Show() End Sub
Private Sub 退出ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 退出ToolStripMenuItem.Click
10 End
End Sub。