使用流对象保存和显示图片 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 StringDim 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.CloseEnd 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.CloseEnd Sub Private Sub Command1_Click()Call s_ReadFileEnd Sub Private Sub Command2_Click()Call s_SaveFileEnd 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 iConcstrEnd Sub Private Sub Form_Unload(Cancel As Integer)iConc.CloseSet iConc = NothingEnd Sub
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 StringDim 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.CloseEnd 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.CloseEnd Sub Private Sub Command1_Click()Call s_ReadFileEnd Sub Private Sub Command2_Click()Call s_SaveFileEnd 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 iConcstrEnd Sub Private Sub Form_Unload(Cancel As Integer)iConc.CloseSet iConc = NothingEnd Sub