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Tip: Working with an SQL Output Parameter in C#

How to specify the SQL Output parameter's Direction property once you have created it.


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When working with an SQL Output parameters, you need to specify the parameter's Direction property once you have created it. Here is a nice little example method:

private float checkValue()
        {
            SqlConnection con = new SqlConnection("Provider=PROVIDER;Server=SERVER;Database=DATABASE;");
            SqlCommand com = new SqlCommand("getValue", con);
            com.CommandType = CommandType.StoredProcedure;

            SqlParameter par = new SqlParameter("@WB", SqlDbType.Float);
            par.Direction = ParameterDirection.Output;
            com.Parameters.Add(par);

            con.Open();
            com.ExecuteNonQuery();
            float i = float.Parse(par.Value.ToString());
            return i;
        }
Implementation
float val = checkvalue();

 



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