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打开VB6.0,新建工程SQL_data,新建一个EXE，并添加一个模块。如图
。

一：添加引用和部件(如下两图)蓝色的两个，是要选中打勾的。
注意，一个是“引用”，一个是“部件”。

二：添加一个模块 Data_Sql，并把图下面的复制粘贴到模块中。 '连接SQL的模块
Public conn As ADODB.Connection
Public rs As ADODB.Recordset
Public addFlag As Boolean '声明部分
Public Function OpenCn(ByVal Cip As String, ByVal users As String, ByVal pw As String) As Boolean '连接模块 填写数据库等信息
Dim mag As String
On Error GoTo strerrmag
Set conn = New ADODB.Connection
conn.ConnectionTimeout = 25
conn.Provider = "sqloledb"
conn.Properties("data source").Value = Cip '服务器的名字
conn.Properties("initial catalog").Value = "pubs" '库名
'conn.Properties("integrated security").Value = "SSPI" '登陆类型
conn.Properties("user id").Value = users 'SQL库名
conn.Properties("password").Value = pw '密码
'sql = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;password=;Initial Catalog=pubs;Data Source=127.0.0.1" '如果不用这个模块也行可以，这一句便是常用的引擎。
'conn.ConnectionString = sql
conn.Open
OpenCn = True
If conn.State = 1 Then addFlag = True
Exit Function
strerrmag:
mag = "Data can't connect"
Call MsgBox(mag, vbOKOnly, "Error:Data connect")
addFlag = False
Exit Function '连接错误消息
End Function

'关闭数据库，释放连接
Public Sub cloCn()
On Error Resume Next
If conn.State <> adStateClosed Then conn.Close
Set conn = Nothing
End Sub

Public Function openRs(ByVal strsql As String) As Boolean '连接数据库记录集
Dim mag As String
Dim rpy As Boolean
On Error GoTo strerrmag
Set rs = New ADODB.Recordset
If addFlag = False Then rpy = True
With rs
.ActiveConnection = conn
.CursorLocation = adUseClient
.CursorType = adOpenKeyset
.LockType = adLockOptimistic
.Open strsql
End With
addFlag = True
openRs = True
'End '将记录集给rs
Exit Function
strerrmag:
mag = "data not connect"
Call MsgBox(mag, vbOKOnly, "error:connect")
openRs = False
End
'Exit Function '连接错误消息
End Function
Public Sub cloRs()
On Error Resume Next
If rs.State <> adStateClosed Then rs.Clone
Set rs = Nothing '释放记录集
End Sub

把它放入到模块文件中，以备调用。

三：下面两图是模块的代码图片和窗体的代码图片

Private Sub Command1_Click()
a = Trim(Text1.Text)
b = Trim(Text2.Text)
c = Trim(Text3.Text)
Call OpenCn(a, b, c)
If addFlag = True Then MsgBox ("OK")
Call openRs("select * from jobs")
Set DataGrid1.DataSource = rs
'rs.Close
End SubPrivate Sub Command2_Click()
Unload Me
End Sub
四：运行时的图片(下面两图) 到了这一步，一个简单的VB连接SQL的例子就完成了

SQL, vb

SQL数据库中自动记录时间 VB+Datagrid1的应用