frmupdateclient.frm

使用vb开发的课程设计

VERSION 5.00
Begin VB.Form frmUpdateClient 
   Caption         =   "删改客户信息"
   ClientHeight    =   4200
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   5895
   LinkTopic       =   "Form1"
   ScaleHeight     =   4200
   ScaleWidth      =   5895
   StartUpPosition =   3  'Windows Default
   Begin VB.Frame Frame1 
      Caption         =   "客户信息"
      Height          =   2175
      Index           =   1
      Left            =   120
      TabIndex        =   7
      Top             =   1200
      Width           =   5655
      Begin VB.TextBox txtClient 
         Enabled         =   0   'False
         Height          =   285
         Index           =   0
         Left            =   1200
         TabIndex        =   12
         Text            =   "Text1"
         Top             =   360
         Width           =   1575
      End
      Begin VB.TextBox txtClient 
         Height          =   285
         Index           =   1
         Left            =   3840
         TabIndex        =   11
         Text            =   "Text2"
         Top             =   360
         Width           =   1575
      End
      Begin VB.TextBox txtClient 
         Height          =   285
         Index           =   2
         Left            =   1200
         TabIndex        =   10
         Text            =   "Text3"
         Top             =   840
         Width           =   1575
      End
      Begin VB.TextBox txtClient 
         Height          =   285
         Index           =   3
         Left            =   3720
         TabIndex        =   9
         Text            =   "Text4"
         Top             =   840
         Width           =   1695
      End
      Begin VB.TextBox txtClient 
         Height          =   615
         Index           =   4
         Left            =   1200
         TabIndex        =   8
         Text            =   "Text5"
         Top             =   1320
         Width           =   4215
      End
      Begin VB.Label Label1 
         Caption         =   "客户名称："
         Height          =   255
         Index           =   1
         Left            =   240
         TabIndex        =   17
         Top             =   360
         Width           =   1215
      End
      Begin VB.Label Label2 
         Caption         =   "联  系  人："
         Height          =   255
         Left            =   2880
         TabIndex        =   16
         Top             =   360
         Width           =   975
      End
      Begin VB.Label Label3 
         Caption         =   "电话："
         Height          =   255
         Left            =   600
         TabIndex        =   15
         Top             =   840
         Width           =   615
      End
      Begin VB.Label Label4 
         Caption         =   "E-mail："
         Height          =   255
         Left            =   3120
         TabIndex        =   14
         Top             =   840
         Width           =   735
      End
      Begin VB.Label Label5 
         Caption         =   "备注："
         Height          =   255
         Left            =   600
         TabIndex        =   13
         Top             =   1320
         Width           =   615
      End
   End
   Begin VB.CommandButton cmdCancel 
      Caption         =   "返回(&C)"
      Height          =   375
      Left            =   3600
      TabIndex        =   6
      Top             =   3600
      Width           =   1215
   End
   Begin VB.CommandButton cmdDelete 
      Caption         =   "删除(&D)"
      Height          =   375
      Left            =   2160
      TabIndex        =   5
      Top             =   3600
      Width           =   1215
   End
   Begin VB.CommandButton cmdUpdate 
      Caption         =   "修改(&U)"
      Height          =   375
      Left            =   720
      TabIndex        =   4
      Top             =   3600
      Width           =   1215
   End
   Begin VB.Frame Frame1 
      Caption         =   "查询"
      Height          =   975
      Index           =   0
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   5655
      Begin VB.CommandButton cmdQuery 
         Caption         =   "查询(&Q)"
         Height          =   375
         Left            =   3480
         TabIndex        =   3
         Top             =   360
         Width           =   1215
      End
      Begin VB.TextBox txtClientName 
         Height          =   285
         Left            =   1200
         TabIndex        =   2
         Top             =   360
         Width           =   1935
      End
      Begin VB.Label Label1 
         Caption         =   "客户名称："
         Height          =   255
         Index           =   0
         Left            =   240
         TabIndex        =   1
         Top             =   360
         Width           =   975
      End
   End
End
Attribute VB_Name = "frmUpdateClient"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Public sqlStr As String
Public msgText As String

Private Sub cmdCancel_Click()
Unload Me

End Sub

Private Sub cmdDelete_Click()
   Dim conn As ADODB.Connection
   
   '组合得到完成数据删除的SQL语句
   sqlStr = "delete from client where" _
          & " [clientName]='" & Trim(txtClient(0).Text) & "'"
   On Error GoTo exitSub
   Set conn = New ADODB.Connection
   conn.Open connStr
   
   '执行SQL语句
   conn.Execute sqlStr
   MsgBox "成功删除数据!!"
   clearTextBox
exitSub:
   
   conn.Close

End Sub

Private Sub cmdQuery_Click()
getClientInfo txtClientName.Text
End Sub

Private Sub cmdUpdate_Click()
   Dim conn As ADODB.Connection
   
   '组合得到完成数据修改的SQL语句
   sqlStr = "update client set [email]='" & txtClient(3).Text _
          & "',[telno]='" & txtClient(2).Text _
          & "',[contact]='" & txtClient(1).Text _
          & "',[memo]='" & txtClient(4).Text _
          & "' where [clientName]='" & Trim(txtClient(0).Text) & "'"
   On Error GoTo exitSub
   Set conn = New ADODB.Connection
   conn.Open connStr
   
   '执行SQL语句
   conn.Execute sqlStr
   MsgBox "成功修改数据!!"
   clearTextBox
exitSub:
   
   conn.Close

End Sub

Private Sub Form_Load()
clearTextBox
End Sub

Sub clearTextBox()
Dim i As Integer
For i = 0 To 4
    txtClient(i).Text = ""
Next i
End Sub

Sub getClientInfo(name As String)
'获取并显示客户信息
Dim rstClient As ADODB.Recordset

    '从客户信息表中查找客户信息并在窗体上显示出来供修改
    sqlStr = "select * from client where" _
           & " clientName='" & txtClientName.Text & "'"
    Set rstClient = ExecuteSQL(sqlStr, msgText)
    
    If Not rstClient.EOF Then
        txtClient(0).Text = Trim(rstClient.Fields("clientName"))
        txtClient(1).Text = Trim(rstClient.Fields("contact"))
        txtClient(2).Text = Trim(rstClient.Fields("telno"))
        txtClient(3).Text = Trim(rstClient.Fields("email"))
        txtClient(4).Text = Trim(rstClient.Fields("memo"))
    Else
        MsgBox "没有找到相关信息，请添加！", vbOKOnly + vbExclamation, "警告"
        
        Exit Sub
    End If
    rstClient.Close
End Sub