backup database by pg_dump

Can you help me?

To back up database, I use pg_dump command as normal in command prompt

1. C:\Program Files\PostgreSQL\8.1\bin\pg_dump -h 192.168.77.117 -p 5432 -U quangvu -C BENET2 > a.sql

or

2. C:\Program Files\PostgreSQL\8.1\bin\pg_dump -h 192.168.77.117 -p 5432 -U quangvu -C -f aaa.zzz BENET2

-----> It's OK

But, now i want to use in VBNET code, so I try:

Dim str As String = "C:\Program Files\PostgreSQL\8.1\bin\pg_dump"
Dim para As String = " -h 192.168.77.117 -p 5432 -U quangvu -C BENET2 > a.sql "

Process.Start(str, para)

It run but I can't see the result in my directory? What wrong?

Thanks

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