fields.ebf

windows mobile 应用程序开发实践一书的源代码

VERSION 5.00
Begin VB.Form fields 
   Appearance      =   0  'Flat
   BackColor       =   &H80000000&
   Caption         =   "新增加字段信息"
   ClientHeight    =   3375
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3930
   FillColor       =   &H00C0E0FF&
   BeginProperty Font 
      Name            =   "Tahoma"
      Size            =   9
      Charset         =   0
      Weight          =   400
      Underline       =   0   'False
      Italic          =   0   'False
      Strikethrough   =   0   'False
   EndProperty
   ForeColor       =   &H80000005&
   ScaleHeight     =   3375
   ScaleWidth      =   3930
   Begin VBCE.CommandButton but_cancel 
      Height          =   375
      Left            =   1680
      TabIndex        =   5
      Top             =   1080
      Width           =   975
      _cx             =   1720
      _cy             =   661
      BackColor       =   12632256
      Caption         =   "取消"
      Enabled         =   -1  'True
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "Tahoma"
         Size            =   9
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Style           =   0
   End
   Begin VBCE.CommandButton but_ok 
      Height          =   375
      Left            =   360
      TabIndex        =   4
      Top             =   1080
      Width           =   975
      _cx             =   1720
      _cy             =   661
      BackColor       =   12632256
      Caption         =   "确定"
      Enabled         =   -1  'True
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "Tahoma"
         Size            =   9
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Style           =   0
   End
   Begin VBCE.ComboBox cb_fieldtype 
      Height          =   300
      Left            =   960
      TabIndex        =   3
      Top             =   480
      Width           =   1815
      List            =   "fields.frx":0000
      ItemData        =   "fields.frx":0028
      _cx             =   3201
      _cy             =   529
      BackColor       =   -2147483643
      Enabled         =   -1  'True
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "Tahoma"
         Size            =   9
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   -2147483640
      Text            =   ""
      IntegralHeight  =   -1  'True
      Locked          =   0   'False
      Sorted          =   0   'False
      Style           =   0
   End
   Begin VBCE.Label Label2 
      Height          =   375
      Left            =   0
      TabIndex        =   2
      Top             =   480
      Width           =   975
      _cx             =   1720
      _cy             =   661
      AutoSize        =   0   'False
      BackColor       =   -2147483648
      BackStyle       =   1
      BorderStyle     =   0
      Caption         =   "字段类型"
      Enabled         =   -1  'True
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "Tahoma"
         Size            =   9
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   -2147483640
      Alignment       =   0
      UseMnemonic     =   -1  'True
      WordWrap        =   0   'False
   End
   Begin VBCE.TextBox tx_newfiledname 
      Height          =   375
      Left            =   960
      TabIndex        =   1
      Top             =   0
      Width           =   1815
      _cx             =   3201
      _cy             =   661
      BackColor       =   -2147483643
      BorderStyle     =   1
      Enabled         =   -1  'True
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "Tahoma"
         Size            =   9
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   -2147483640
      Text            =   "ab"
      Alignment       =   0
      HideSelection   =   -1  'True
      Locked          =   0   'False
      MaxLength       =   0
      MultiLine       =   0   'False
      PasswordChar    =   ""
      ScrollBars      =   0
   End
   Begin VBCE.Label Label1 
      Height          =   375
      Left            =   0
      TabIndex        =   0
      Top             =   0
      Width           =   975
      _cx             =   1720
      _cy             =   661
      AutoSize        =   0   'False
      BackColor       =   -2147483648
      BackStyle       =   1
      BorderStyle     =   0
      Caption         =   "字段名称"
      Enabled         =   -1  'True
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "Tahoma"
         Size            =   9
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   -2147483640
      Alignment       =   0
      UseMnemonic     =   -1  'True
      WordWrap        =   0   'False
   End
End
Attribute VB_Name = "fields"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub but_cancel_Click()
fields.Visible = False
End Sub

Private Sub but_ok_Click()

If Not table.State = adStateClosed Then
    table.Close
End If
Dim sql As String
Dim i As Integer
If Len(Trim(tx_newfiledname.Text)) = 0 Then
MsgBox "请输入新字段名称", vbCritical, "提示"
Exit Sub
ElseIf Len(cb_fieldtype.Text) = 0 Then
MsgBox "请选择新字段类型", vbCritical, "提示"
Exit Sub

End If
For i = 0 To UBound(fieldarray) - 1
  If Trim(tx_newfiledname.Text) = Trim(fieldarray(i)) Then
    MsgBox "该字段已经存在，请输入其他名字", vbOKCancel + vbInformation, "增加字段"
  Exit Sub
 End If
 Next
 
sql = "alter table " & Form1.cb_table.List(Form1.cb_table.ListIndex) & " add " & tx_newfiledname.Text & " " & cb_fieldtype.List(cb_fieldtype.ListIndex)
  If vbOK = MsgBox(sql, vbQuestion + vbOKCancel, "是否增加字段") Then
 Connection.Execute sql
  If Err.Number > 0 Then
  MsgBox "字段添加错误，请检查", vbOKOnly, "增加字段错误"
 Else
  MsgBox "添加成功", vbOKOnly, "增加字段成功"
 fields.Visible = False
 fields.Show
 End If
 Else
 Exit Sub
 End If





End Sub

Private Sub Form_Load()

cb_fieldtype.AddItem "Varchar"
cb_fieldtype.AddItem "Text"
cb_fieldtype.AddItem "Varbinary"
cb_fieldtype.AddItem "Varchar"
cb_fieldtype.AddItem "smallint"
cb_fieldtype.AddItem "Float"
cb_fieldtype.AddItem "DateTime"
cb_fieldtype.AddItem "Bit"
cb_fieldtype.AddItem "Uint"
cb_fieldtype.AddItem "Usmallint"
cb_fieldtype.AddItem "int"
cb_fieldtype.ListIndex = 1


End Sub