c# - Supplying output parameter to sqlparametercollection resulting in error (Varbinary) -

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I want to supply output parameter to my stored proc, return this output process byte [] Used to be. How do I do this?

If I do the following: 

  command Parameter. Add (new SQLPamator ("@Bytes", SQLDB type.ubblery)); Command. Parameter [1]. Direction = Parameter Direction Output;

I get: 

  system. Infinite Operation Exception: Byte [] [1]: Size is an invalid size of 0. This stored work works well in SQL Server when I execute the SSMS option "execute the stored procedure".

Any ideas? Thank you

You must provide a value for the size parameter: 

  New SqlParameter ("@bytes", SqlDbType.VarBinary, 8000)

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