操作步驟:
1. 下載Foxpro的OLEDB驅動VFPOLEDBSetup.msi,安裝,選擇允許everyone運行。
2. 注冊OLEDB驅動:
regsvr32 /s "C:\Program Files (x86)\Common Files\system\ole db\vfpoledb.dll"
3. 運行x86版PowerShell:
$ConnString = "Provider=vfpoledb.1;Data Source=c:\accounts.dbf;Collating Sequence=machine;" $Conn = new-object System.Data.OleDb.OleDbConnection($connString) $conn.open() $cmd = new-object System.Data.OleDb.OleDbCommand("select * from accounts", $Conn) $DataAdapter = new-object System.Data.OleDb.OleDbDataAdapter($cmd) $dataset = new-object System.Data.Dataset $DataAdapter.fill($dataset) $dataset.Tables[0]
坑列表:
從Foxpro驅動描述:
“The VFPODBC driver is no longer supported. We strongly recommend using the Visual FoxPro OLE DB provider as a replacement.”
ODBC驅動分為32位和64位。只有編譯為32位的應用程序才能調用32位的ODBC驅動。
"A 32-bit app uses a 32-bit ODBC driver even when installed on 64-bit
Windows. But on 64-bit systems, there are two views on ODBC - one is
64-bit, the other is 32-bit. It looks like you opened the default 64-bit
view which doesn't show the 32-bit ODBC
drivers. To solve this go to c:\windows, there you see a folder named
SysWOW64. Here you find odbcad32.exe. After launching the exe you can
add a new system dsn or user dsn for the required ODBC driver. Configure
it as usual. All other ODBC
drivers you have been missing will appear there."
安裝了Visual Foxpro后,會安裝32位ODBC驅動VFPODBC.DLL。
安裝OLEDB驅動時要選擇允許everyone運行。
要注冊vfpoledb.dll。
OLEDB驅動的Provider為vfpoledb.1。
要在32位PowerShell下運行來調用該驅動。
后記:
嘗試在32位PowerShell下操作ODBC驅動,失敗。
$ConnString ="Driver={Microsoft Visual FoxPro Driver};SourceType=DBF;SourceDB='c:\foxpro\';Exclusive=No;Collate=Machine;NULL=NO;DELETED=NO;BACKGROUNDFETCH=NO;" $Connection = New-Object System.Data.Odbc.OdbcConnection $Connection.ConnectionString = $ConnString $Connection.Open() $Command = New-Object System.Data.Odbc.OdbcCommand $Command.Connection = $Connection $Command.CommandText = $Query $Reader = $Command.ExecuteReader() $Counter = $Reader.FieldCount while ($Reader.Read()) { $SQLObject = @{} for ($i = 0; $i -lt $Counter; $i++) { $SQLObject.Add( $Reader.GetName($i), $Reader.GetValue($i)); } $SQLObject } $Connection.Close() $Reader.Close()
但在32位操作系統上運行是正常。若其他語言在開發時應編譯為32位版本。
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