第12章 实验报告.docx

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第12章 实验报告.docx

第12章实验报告

第12章

12.4.2

DimtrytimesAsInteger'尝试登陆次数

‘命令按钮“确定”的Click事件

PrivateSubcmdCancel_Click()

IfMsgBox("你选择了退出登陆,是否退出?

",_

vbYesNo+vbInformation,"用户登陆")=vbYesThen

End

Else

ExitSub

EndIf

EndSub

‘命令按钮“确定”的Click事件

PrivateSubcmdOK_Click()

DimsNameAsString,sPasAsString

DimmrsAsADODB.Recordset,strSQLAsString

sName=Trim(txtUserName.Text):

sPas=Trim(txtPassword.Text)

'数据有效性检查

IfsName=""Then

MsgBox"请输入用户名!

",vbCritical,"用户登陆验证"

txtUserName.SetFocus

‘若用户名为空,则提示输入用户名,并将定位在用户名文本框

ExitSub

EndIf

IfsPas=""Then

MsgBox"请输入密码!

",vbCritical,"用户登陆验证"

txtPassword.SetFocus

‘若用户密码为空,则提示输入密码,并将定位在密码文本框

ExitSub

EndIf

'检查用户名是否正确

strSQL="select*from用户表where用户名='"&sName&"'"

Setmrs=conn.Execute(strSQL)

Ifmrs.EOF=TrueThen

MsgBox"用户名不存在!

",vbCritical,"用户登陆验证"

try_times=try_times+1

Iftry_times>=3Then

MsgBox"您已经三次尝试进入本系统,均不成功,系统将关闭!

",_

vbCritical,"用户登陆验证"

End

Else

txtUserName.SetFocus

txtUserName.SelStart=0

txtUserName.SelLength=Len(txtUserName.Text)

ExitSub

EndIf

EndIf

strSQL="select*from用户表where用户名='"&sName&"'"&_

"and密码='"&sPas&"'"

Setmrs=conn.Execute(strSQL)

Ifmrs.EOF=TrueThen

MsgBox"密码错误!

",vbCritical,"用户登陆验证"

try_times=try_times+1

Iftry_times>=3Then

MsgBox"您已经三次尝试进入本系统,均不成功,系统将关闭!

",_

vbCritical,"用户登陆验证"

End

Else

txtPassword.SetFocus

txtPassword.SelStart=0

txtPassword.SelLength=Len(txtPassword.Text)

ExitSub

EndIf

EndIf

MsgBox"登陆成功!

",vbInformation,"用户登陆验证"

'保存当前登陆的权限

bolAuthority=mrs.Fields("权限")

'加载MDI主窗体

MDI.Show

'卸载登陆窗体

UnloadMe

EndSub

PrivateSubForm_Load()

CallScreenCenter(Me)

‘调用标准模块中的ScreenCenter过程,将本窗体置于屏幕中心

‘连接d:

\VB\CH12\Mydata.mdb,连接对象为conn。

DimconnsAsString

conns="Provider=Microsoft.Jet.OLEDB.4.0;DataSource=d:

\VB\CH12\Mydata.mdb"

conn.Openconns

EndSub

PrivateSubtxtPassword_KeyPress(KeyAsciiAsInteger)

'用于在输入完密码后并按回车键后跳到确定命令按钮

IfKeyAscii=13ThencmdOK.SetFocus

EndSub

PrivateSubtxtUserName_KeyPress(KeyAsciiAsInteger)

'用于在输入完用户名后并按回车键后跳到输入密码文本框

IfKeyAscii=13ThentxtPassword.SetFocus

EndSub

12.4.3

PrivateSubAdd_user_Click()

Adduser.Show‘调入“新建用户”窗体

EndSub

PrivateSubck_Click()

crk1.Caption="出库"

crk1.Show‘调入“出入库”窗体

EndSub

PrivateSubckhwmx_Click()

sqlfind="select*from出入库"

rs_data1.Opensqlfind,conn,adOpenKeyset,adLockPessimistic

hwckmx.Show‘调入“查看货物明细”窗体

EndSub

PrivateSubhwcx_Click()

cxhw.Show‘调入“查询货物”窗体

EndSub

PrivateSubHz_date_Click()

hz_menu="date"

hzhw.Show‘调入“汇总货物”窗体,并按日期汇总

EndSub

PrivateSubHz_hdh_Click()

hz_menu="hdh"

hzhw.Show‘调入“汇总货物”窗体,并按货单号汇总

EndSub

PrivateSubquit_Click()

UnloadMe

EndSub

PrivateSubrk_Click()

crk1.Caption="入库"

crk1.Show‘调入“出入库”窗体

EndSub

PrivateSubHz_kh_Click()

hz_menu="kh"

hzhw.Show‘调入“汇总货物”窗体,并按客户汇总

EndSub

PrivateSubXGMM_Click()

pwsxg.Show‘调入“修改密码”窗体

EndSub

12.4.4

PrivateSubCommand1_Click()

DimsqlAsString

Dimrs_addAsNewADODB.Recordset

IfTrim(Text1.Text)=""Then

MsgBox"用户名不能为空",vbOKOnly+vbExclamation,""

ExitSub

Text1.SetFocus

Else

IfTrim(Text2.Text)=""Then

MsgBox"密码不能为空",vbOKOnly+vbExclamation,""

ExitSub

Text2.SetFocus

Else

sql="select*from用户表"

rs_add.Opensql,conn,adOpenKeyset,adLockPessimistic

While(rs_add.EOF=False)

IfTrim(rs_add.Fields(0))=Trim(Text1.Text)Then

MsgBox"已有这个用户",vbOKOnly+vbExclamation,""

Text1.SetFocus

Text1.Text=""

Text2.Text=""

Text3.Text=""

Combo1.Text=""

ExitSub

Else

rs_add.MoveNext

EndIf

Wend

IfTrim(Text2.Text)<>Trim(Text3.Text)Then

MsgBox"两次密码不一致",vbOKOnly+vbExclamation,""

Text2.SetFocus

Text2.Text=""

Text3.Text=""

ExitSub

ElseIfTrim(Combo1.Text)<>"system"AndTrim(Combo1.Text)<>"user"Then

MsgBox"请选择正确的用户权限",vbOKOnly+vbExclamation,""

Combo1.SetFocus

Combo1.Text=""

ExitSub

Else

rs_add.AddNew

rs_add.Fields(0)=Text1.Text

rs_add.Fields

(1)=Text2.Text

rs_add.Fields

(2)=Combo1.Text

rs_add.Update

rs_add.Close

MsgBox"添加用户成功",vbOKOnly+vbExclamation,""

UnloadMe

EndIf

EndIf

EndIf

EndSub

PrivateSubCommand2_Click()

UnloadMe

EndSub

12.4.5

PrivateSubCommand1_Click()

IfTrim(Text1.Text="")Then

MsgBox"旧密码不能为空,请重新输入!

",vbOKOnly+vbExclamation,"警告"

Text1.SetFocus

Text1.Text=""

ExitSub

EndIf

IfTrim(Text2.Text="")Then

MsgBox"新密码不能为空,请重新输入!

",vbOKOnly+vbExclamation,"警告"

Text2.SetFocus

Text2.Text=""

ExitSub

EndIf

IfText2.Text<>Text3.TextThen

MsgBox"两次输入的新密码不同,请重新输入!

",vbOKOnly+vbExclamation,"警告"

Text2.SetFocus

Text2.Text=""

Text3.Text=""

ExitSub

EndIf

DimstrSqlAsString

DimrsAsNewADODB.Recordset

strSql="Select*from用户表where用户名='"&userid&"'"

rs.OpenstrSql,conn,adOpenForwardOnly,adLockReadOnly

IfTrim(rs.Fields("密码"))<>Trim(Text1.Text)Then

MsgBox"旧密码不对,请重新输入!

",vbOKOnly+vbExclamation,"警告"

Text1.SetFocus

Text1.Text=""

Else

strSql="Update用户表set密码='"&Text2&"'where用户名='"&userid&"'"

conn.ExecutestrSql

MsgBox"密码修改成功!

",vbOKOnly+vbInformation,"提示"

Text3.Text=""

Text1.Text=""

Text2.Text=""

UnloadMe

EndIf

rs.Close

Setrs=Nothing

EndSub

PrivateSubCommand2_Click()

UnloadMe

EndSub

12.4.6

OptionExplicit

Constrow_num=10'表格行数

Constcol_num=6'表格列数

PrivateSubCombo2_Click()

MSFlexGrid1.Text=Combo2.Text

MSFlexGrid1.Row=MSFlexGrid1.Row+1

MSFlexGrid1.Col=0

Combo2.Visible=False

Text5.Visible=True

nextpositionMSFlexGrid1.Row,MSFlexGrid1.Col

EndSub

PrivateSubCommand1_Click()

Dimrs_saveAsNewADODB.Recordset

DimsqlAsString

DimiAsInteger

DimsAsString'转化数据用

OnErrorGoTosaveerror

IfTrim(Text1.Text)=""Then

MsgBox"货单不能为空!

",vbOKOnly+vbExclamation,""

Text1.SetFocus

ExitSub

EndIf

IfCombo1.Text=""Then

MsgBox"请选择货源地!

",vbOKOnly+vbExclamation,""

Combo1.SetFocus

ExitSub

EndIf

Ifcomboy.Text=""Then

MsgBox"请选择年份!

",vbOKOnly+vbExclamation,""

comboy.SetFocus

ExitSub

EndIf

Ifcombom.Text=""Then

MsgBox"请选择月份!

",vbOKOnly+vbExclamation,""

combom.SetFocus

ExitSub

EndIf

Ifcombod.Text=""Then

MsgBox"请选择日期!

",vbOKOnly+vbExclamation,""

combod.SetFocus

ExitSub

EndIf

IfText2.Text=""Then

MsgBox"请填写凭证号!

",vbOKOnly+vbExclamation,""

Text2.SetFocus

ExitSub

EndIf

IfText3.Text=""Then

MsgBox"请填写经手人!

",vbOKOnly+vbExclamation,""

Text3.SetFocus

ExitSub

EndIf

IfMSFlexGrid1.Col<>0Then

MsgBox"请输入完整的物品信息!

",vbOKOnly+vbExclamation,""

MSFlexGrid1.SetFocus

ExitSub

EndIf

sql="select*from出入库where货单号='"&Text1.Text&"'"

rs_save.Opensql,conn,adOpenKeyset,adLockPessimistic

Ifrs_save.EOFThen

rs_save.AddNew

rs_save.Fields(0)=Trim(Text1.Text)

rs_save.Fields

(1)=CDate(Trim(comboy.Text)&"-"&Trim(combom.Text)&"-"&Trim(combod.Text))

rs_save.Fields

(2)=Trim(Combo1.Text)

rs_save.Fields(3)=Trim(Text2.Text)

rs_save.Fields(4)=Trim(Text3.Text)

rs_save.Fields(5)=Trim(Text4.Text)

Ifcrk1.Caption="入库"Then'出入库标记

rs_save.Fields(6)=True

Else

rs_save.Fields(6)=False

EndIf

rs_save.Update

rs_save.Close

Else

MsgBox"货单号重复!

",vbOKOnly+vbExclamation,""

Text1.SetFocus

Text1.Text=""

rs_save.Close

ExitSub

EndIf

sql="select*from货物明细"

rs_save.Opensql,conn,adOpenKeyset,adLockPessimistic

Fori=1ToMSFlexGrid1.Row-1

rs_save.AddNew

rs_save.Fields(0)=Trim(Text1.Text)

rs_save.Fields

(1)=CDate(Trim(comboy.Text)&"-"&Trim(combom.Text)&"-"&Trim(combod.Text))

rs_save.Fields

(2)=Trim(Combo1.Text)

MSFlexGrid1.Row=i

MSFlexGrid1.Col=0

rs_save.Fields(3)=Trim(MSFlexGrid1.Text)

MSFlexGrid1.Col=1

Ifcrk1.Caption="出库"Then

s="-"&Trim(MSFlexGrid1.Text)

rs_save.Fields(4)=CDbl(s)

Else

rs_save.Fields(4)=CDbl(Trim(MSFlexGrid1.Text))

EndIf

MSFlexGrid1.Col=2

rs_save.Fields(5)=Trim(MSFlexGrid1.Text)

MSFlexGrid1.Col=3

rs_save.Fields(6)=Trim(MSFlexGrid1.Text)

MSFlexGrid1.Col=4

Ifcrk1.Caption="出库"Then

s="-"&Trim(MSFlexGrid1.Text)

rs_save.Fields(7)=CDbl(s)

Else

rs_save.Fields(7)=CDbl(Trim(MSFlexGrid1.Text))

EndIf

MSFlexGrid1.Col=5

rs_save.Fields(8)=Trim(MSFlexGrid1.Text)

Nexti

rs_save.Update

rs_save.Close

MsgBox"添加成功!

",vbOKOnly+vbExclamation,""

UnloadMe

ExitSub

saveerror:

MsgBoxErr.Description

EndSub

PrivateSubCommand2_Click()

UnloadMe

EndSub

PrivateSubForm_Load()

DimsqlAsString

DimiAsInteger

OnErrorGoToloaderror

Combo1.AddItem("北京")

Combo1.AddItem("上海")

Combo1.AddItem("天津")

Combo1.AddItem("武汉")

Combo1.AddItem("广州")

Combo1.AddItem("南京")

Combo2.AddItem("微利公司")

Combo2.AddItem("火星公司")

Combo2.AddItem("南山公司")

Combo2.AddItem("长虹公司")

Combo2.AddItem("利得公司")

Fori=2007To2020'添加月份

comboy.AddItemi

Nexti

Fori=1To12'添加月份

combom.AddItemi

Nexti

Fori=1To31'添加日期

combod.AddItemi

Nexti

setgrid

setgrid_head

Text5.Visible=False

clear_grid

ExitSub

loaderror:

MsgBoxErr.Description

EndSub

PrivateSubForm_Unload(CancelAsInteger)

'关闭数据对象

'rs_checkname.Close

'rs_custom.Close

EndSub

PublicSubsetgrid()'设置表格子程序

DimiAsInteger

OnErrorGoToseterror

MSFlexGrid1.ScrollBars=flexScrollBarBoth

MSFlexGrid1.FixedCols=0

MSFlexGrid1.Rows=row_num

MSFlexGrid1.Cols=col_num

MSFlexGrid1.SelectionMode=flexSelectionByRow

Fori=0Torow_num-1

MSFlexGrid1.RowHeight(i)=315

Next

Fori=0Tocol_num-1

MSFlexGrid1.ColWidth(i)=1300

Nexti

ExitSub

seterror:

MsgBoxErr.Description

EndSub

PublicSubsetgrid_head()

OnErrorGoTosetheaderror

MSFlexGrid1.Row=0

MSFlexGrid1.Col=0

MSFlexGrid1.Text="物品名称"

MSFlexGrid1.Col=1

M

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