Question

好吧，我想做的事听起来很简单。我想加载一个表单并在表单加载调用一个sql语句，返回1项并将其放在TextBox1中。这是我到目前为止所做的。

 Private Sub Form_Load()

 Call openTheDatabase

 End Sub

 Public Function openTheDatabase() As Boolean

 '-- Here we want to open the database
 Dim sConnectionString As String
 Dim strSQLStmt As String

 '-- Build the connection string
 sConnectionString = "PROVIDER = MSDASQL;driver={SQL Server};database=databasename ;server=servername;uid=;pwd=;"


 strSQLStmt = "SELECT chvDealerName " & _
        "From dbo.tblDealers Where chrVSCAcctNum = '90442001'"

 TextBox1.Text = strSQLStmt

 End Function

修改

好吧是Text1.Text，但现在我只是在文本框中获取字符串，而不是实际的数据库条目

Answer 1

您可以在此处看到设置ADODB连接的一个可靠示例：http://www.timesheetsmts.com/adotutorial.htm

您的项目需要先引用ADODB库。要做到这一点：

打开您的项目
点击顶部的项目菜单，然后点击下拉列表中的参考
检查“Microsoft ActiveX数据对象2.x库”（x是您看到的最高编号 - 在我的Windows XP专业版SP2上，它是2.7“

项目示例：

Private Sub Form_Load()

 Call openTheDatabase

 End Sub

 Public Function openTheDatabase() As Boolean

 '-- Here we want to open the database
 Dim sConnectionString As String
 Dim strSQLStmt As String

 '-- Build the connection string
 sConnectionString = "PROVIDER = MSDASQL;driver={SQL Server};database=databasename ;server=servername;uid=;pwd=;"


 strSQLStmt = "SELECT chvDealerName " & _
        "From dbo.tblDealers Where chrVSCAcctNum = '90442001'"

'DB WORK
Dim db As New ADODB.Connection
Dim cmd As New ADODB.Command
Dim rs As New ADODB.Recordset
Dim result As String

db.ConnectionString = sConnectionString 
db.Open 'open connection

With cmd
  .ActiveConnection = db
  .CommandText = strSQLStmt
  .CommandType = adCmdText
End With

With rs
  .CursorType = adOpenStatic
  .CursorLocation = adUseClient
  .LockType = adLockOptimistic
  .Open cmd
End With

If rs.EOF = False Then
    rs.MoveFirst
    Let result = rs.Fields(0)
End If
'close conns
rs.Close
db.Close
Set db = Nothing
Set cmd = Nothing
Set rs = Nothing


'set local box

' TextBox1.Text = strSQLStmt
TextBox1.Text = result


 End Function

VB6连接数据库

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