How do I execute and return one output parameter from a stored procedure which returns two output parameters in ASP.NET?

When you create the parameters there is a property called Direction and set it to Output

After executing evaluate that parameter value.

can you show the code both in asp.net and store procedure for simplification?

There was an error in the loop to add parameters

'Sql Command
mSqlCommand = New SqlCommand
mSqlCommand.Connection = YourConnection
mSqlCommand.CommandTimeout = iTimeout
mSqlCommand.CommandText = yourSP
mSqlCommand.CommandType = CommandType.StoredProcedure

Dim paramArr As SqlParameter() = { _
            New SqlParameter("@ParameterInput", SqlDbType.VarChar, 2), _
            New SqlParameter("@ParameterOutput1", SqlDbType.VarChar, 4), _
            New SqlParameter("@ParameterOutput2", SqlDbType.VarChar)
        }

param(0).Value = yourInputValue
param(1).Direction = ParameterDirection.Output
param(2).Direction = ParameterDirection.Output

'Add Parameters
For Each param As SqlParameter In paramArr
   mSqlCommand.Parameters.Add(param)
 Next

'Exec NonQuery
 mSqlCommand.ExecuteNonQuery()
OutputValue1 = Convert.ToString(mSqlCommand.Parameters"("@ParameterOutput1).Value)
OutputValue2 = Convert.ToString(mSqlCommand.Parameters"("@ParameterOutput2).Value)

Select allOpen in new window

That's almost the same I said.

Correcting another error:
OutputValue1 = Convert.ToString(mSqlCommand.Parameters("@ParameterOutput1").Value)
OutputValue2 = Convert.ToString(mSqlCommand.Parameters("@ParameterOutput2").Value)

>How do I execute and return one output parameter from a stored procedure which returns two output parameters  in ASP.NET?

Provide it two parameters but ignore the return value of one parameter.