Public fMainForm As frmMain Public UserName As String Sub Main() Dim fLogin As New frmLogin fLogin.Show vbModal If Not fLogin.OK Then 'Login Failed so exit app End End If Unload fLogin Set fMainForm = New frmMain fMainForm.Show End Sub Public Function ConnectString() _ As String 'returns a DB ConnectString ConnectString = "FileDSN=info.dsn;UID=sa;PWD=23" End Function Public Function ExecuteSQL(ByVal SQL _ As String, MsgString As String) _ As ADODB.Recordset 'executes SQL and returns Recordset Dim cnn As ADODB.Connection Dim rst As ADODB.Recordset Dim sTokens() As String On Error GoTo ExecuteSQL_Error sTokens = Split(SQL) Set cnn = New ADODB.Connection cnn.Open ConnectString If InStr("INSERT,DELETE,UPDATE", _ UCase$(sTokens(0))) Then cnn.Execute SQL MsgString = sTokens(0) & _ " query successful" Else Set rst = New ADODB.Recordset rst.Open Trim$(SQL), cnn, _ adOpenKeyset, _ adLockOptimistic 'rst.MoveLast 'get RecordCount Set ExecuteSQL = rst MsgString = "查询到" & rst.RecordCount & _ " 条记录 " End If ExecuteSQL_Exit: Set rst = Nothing Set cnn = Nothing Exit Function ExecuteSQL_Error: MsgString = "查询错误: " & _ Err.Description Resume ExecuteSQL_Exit End Function Public Function Testtxt(txt As String) As Boolean If Trim(txt) = "" Then Testtxt = False Else Testtxt = True End If End Function
工程--->引用--->Microsoft ActiveX Data Object 2.x(版本号) Dim CN As New ADODB.Connection '定义数据库的连接 Dim Rs As New ADODB.Recordset CN.ConnectionString = "Provider=sqloledb;Data Source=pmserver;Initial Catalog=northwind;User Id=sa;Password=sa;" CN.Open Rs.CursorLocation = adUseClient Rs.Open "select * from employees", CN, adOpenDynamic, adLockOptimistic Set DataGrid1.DataSource = Rs
Dim conn As ADODB.Connection Dim rst As ADODB.Recordset Set conn = New ADODB.Connection conn.Open "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=pubs;Data Source=127.0.0.1"Set rst = New ADODB.Recordset rst.CursorLocation = adUseClient rst.Open "select * from jobs", conn, adOpenDynamic, adLockOptimistic Set DataGrid1.DataSource = rst
Public UserName As String
Sub Main()
Dim fLogin As New frmLogin
fLogin.Show vbModal
If Not fLogin.OK Then
'Login Failed so exit app
End
End If
Unload fLogin
Set fMainForm = New frmMain
fMainForm.Show
End Sub
Public Function ConnectString() _
As String
'returns a DB ConnectString
ConnectString = "FileDSN=info.dsn;UID=sa;PWD=23"
End Function
Public Function ExecuteSQL(ByVal SQL _
As String, MsgString As String) _
As ADODB.Recordset
'executes SQL and returns Recordset
Dim cnn As ADODB.Connection
Dim rst As ADODB.Recordset
Dim sTokens() As String
On Error GoTo ExecuteSQL_Error
sTokens = Split(SQL)
Set cnn = New ADODB.Connection
cnn.Open ConnectString
If InStr("INSERT,DELETE,UPDATE", _
UCase$(sTokens(0))) Then
cnn.Execute SQL
MsgString = sTokens(0) & _
" query successful"
Else
Set rst = New ADODB.Recordset
rst.Open Trim$(SQL), cnn, _
adOpenKeyset, _
adLockOptimistic
'rst.MoveLast 'get RecordCount
Set ExecuteSQL = rst
MsgString = "查询到" & rst.RecordCount & _
" 条记录 "
End If
ExecuteSQL_Exit:
Set rst = Nothing
Set cnn = Nothing
Exit Function
ExecuteSQL_Error:
MsgString = "查询错误: " & _
Err.Description
Resume ExecuteSQL_Exit
End Function
Public Function Testtxt(txt As String) As Boolean
If Trim(txt) = "" Then
Testtxt = False
Else
Testtxt = True
End If
End Function
工程--->引用--->Microsoft ActiveX Data Object 2.x(版本号) Dim CN As New ADODB.Connection '定义数据库的连接
Dim Rs As New ADODB.Recordset
CN.ConnectionString = "Provider=sqloledb;Data Source=pmserver;Initial Catalog=northwind;User Id=sa;Password=sa;"
CN.Open
Rs.CursorLocation = adUseClient
Rs.Open "select * from employees", CN, adOpenDynamic, adLockOptimistic
Set DataGrid1.DataSource = Rs
Dim rst As ADODB.Recordset
Set conn = New ADODB.Connection
conn.Open "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=pubs;Data Source=127.0.0.1"Set rst = New ADODB.Recordset
rst.CursorLocation = adUseClient
rst.Open "select * from jobs", conn, adOpenDynamic, adLockOptimistic
Set DataGrid1.DataSource = rst