我用SQL存放照片,当从Datagrid双击某条记录时,要求记录和照片一起显示在窗体上。这些都没问题。现在是,当我在Datagrid列表中用鼠标单击某条记录时,图片就显示出来了,而记录却要双击才能显示,所以好像记录和图片不匹配了一样,用起来很不方便。Datagrid和显示窗体为同一个窗体,就是窗体的上半部分显示记录和照片下半部份显示Datagrid列表。知道的朋友帮帮忙。谢谢
代码是:
Private Sub DataGrid1_DblClick()
Adodc1.Recordset.Update
If Adodc1.Recordset.RecordCount > 0 Then
Text1.Text = Adodc1.Recordset.Fields(0).Value & ""
Text2.Text = Adodc1.Recordset.Fields(1).Value & ""
Text3.Text = Adodc1.Recordset.Fields(2).Value & ""
Text4.Text = Adodc1.Recordset.Fields(3).Value & ""
Text5.Text = Adodc1.Recordset.Fields(4).Value & ""
Text6.Text = Adodc1.Recordset.Fields(5).Value & ""
Combo1.Text = Adodc1.Recordset.Fields(6).Value & ""
Text8.Text = Adodc1.Recordset.Fields(7).Value & ""
Text9.Text = Adodc1.Recordset.Fields(8).Value & ""
Text7.Text = Adodc1.Recordset.Fields(9).Value & ""
Text11.Text = Adodc1.Recordset.Fields(10).Value & ""
Text10.Text = Adodc1.Recordset.Fields(11).Value & ""
Text12.Text = Adodc1.Recordset.Fields(12).Value & ""
Text14.Text = Adodc1.Recordset.Fields("备注").Value & ""
Text15.Text = Adodc1.Recordset.Fields("产品别名").Value & ""
Text16.Text = Adodc1.Recordset.Fields("单重").Value & ""
Text17.Text = Adodc1.Recordset.Fields("页数").Value & ""
End If
'读取图片到窗体
Set picphoto.DataSource = Adodc1
picphoto.DataField = "照片"
If Adodc1.Recordset.Fields("照片") Is Nothing Then
picphoto.Picture = LoadPicture()
End If
end sub
代码是:
Private Sub DataGrid1_DblClick()
Adodc1.Recordset.Update
If Adodc1.Recordset.RecordCount > 0 Then
Text1.Text = Adodc1.Recordset.Fields(0).Value & ""
Text2.Text = Adodc1.Recordset.Fields(1).Value & ""
Text3.Text = Adodc1.Recordset.Fields(2).Value & ""
Text4.Text = Adodc1.Recordset.Fields(3).Value & ""
Text5.Text = Adodc1.Recordset.Fields(4).Value & ""
Text6.Text = Adodc1.Recordset.Fields(5).Value & ""
Combo1.Text = Adodc1.Recordset.Fields(6).Value & ""
Text8.Text = Adodc1.Recordset.Fields(7).Value & ""
Text9.Text = Adodc1.Recordset.Fields(8).Value & ""
Text7.Text = Adodc1.Recordset.Fields(9).Value & ""
Text11.Text = Adodc1.Recordset.Fields(10).Value & ""
Text10.Text = Adodc1.Recordset.Fields(11).Value & ""
Text12.Text = Adodc1.Recordset.Fields(12).Value & ""
Text14.Text = Adodc1.Recordset.Fields("备注").Value & ""
Text15.Text = Adodc1.Recordset.Fields("产品别名").Value & ""
Text16.Text = Adodc1.Recordset.Fields("单重").Value & ""
Text17.Text = Adodc1.Recordset.Fields("页数").Value & ""
End If
'读取图片到窗体
Set picphoto.DataSource = Adodc1
picphoto.DataField = "照片"
If Adodc1.Recordset.Fields("照片") Is Nothing Then
picphoto.Picture = LoadPicture()
End If
end sub
如果你执意把照片(二进制文件)放到库里的话我认为你应该使用sql文件流的方式。速度和数据安全性都有保障。
打开vb6,新建工程。添加两个按钮,一个image控件
注意:Access中的photo字段类型为OLE对象.
SqlServer中的photo字段类型为Image'** 引用 Microsoft ActiveX Data Objects 2.5 Library 及以上版本
‘2.5版本以下不支持Stream对象
Dim iConcstr As String
Dim iConc As ADODB.Connection
'保存文件到数据库中
Sub s_SaveFile()
Dim iStm As ADODB.Stream
Dim iRe As ADODB.Recordset
Dim iConcstr As String '读取文件到内容
Set iStm = New ADODB.Stream
With iStm
.Type = adTypeBinary '二进制模式
.Open
.LoadFromFile App.Path + "\test.jpg"
End With
'打开保存文件的表
Set iRe = New ADODB.Recordset
With iRe
.Open "select * from img", iConc, 1, 3
.AddNew '新增一条记录
.Fields("photo") = iStm.Read
.Update
End With
'完成后关闭对象
iRe.Close
iStm.Close
End Sub
Sub s_ReadFile()
Dim iStm As ADODB.Stream
Dim iRe As ADODB.Recordset
'打开表
Set iRe = New ADODB.Recordset
‘得到最新添加的纪录
iRe.Open "select top 1 * from img order by id desc", iConc, adOpenKeyset, adLockReadOnly
'保存到文件
Set iStm = New ADODB.Stream
With iStm
.Mode = adModeReadWrite
.Type = adTypeBinary
.Open
.Write iRe("photo")
‘这里注意了,如果当前目录下存在test1.jpg,会报一个文件写入失败的错误.
.SaveToFile App.Path & "\test1.jpg"
End With
Image1.Picture = LoadPicture(App.Path & "\test1.jpg")
'关闭对象
iRe.Close
iStm.Close
End Sub
Private Sub Command1_Click()
Call s_ReadFile
End Sub
Private Sub Command2_Click()
Call s_SaveFile
End Sub
Private Sub Form_Load()
'数据库连接字符串
iConcstr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False" & _
";Data Source=F:\csdn_vb\database\保存图片\access图片\img.mdb"‘下面的语句是连接sqlserver数据库的.
‘iConcstr = "Provider=SQLOLEDB.1;Persist Security Info=True;" & _
‘ "User ID=sa;Password=;Initial Catalog=test;Data Source=yang"
Set iConc = New ADODB.Connection
iConc.Open iConcstr
End Sub
Private Sub Form_Unload(Cancel As Integer)
iConc.Close
Set iConc = Nothing
End Sub