SqlCommand.Paramaters.AddWithValue issue

Posted by Petrus on Stack Overflow See other posts from Stack Overflow or by Petrus
Published on 2010-05-06T11:34:18Z Indexed on 2010/05/06 11:38 UTC
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Hi

I have a problem with the folowwing piece of code. I am passing a parameter (List) to a methods executing the following code. When it executes sql throws an error saying that the proc expects a parameter that was not provided. I know this error and understand it, and when stepping through the code I can see that the cmdExecuteReader object has a collection of parameters, with the correct naame and value. What cou be the problem?

     public SqlDataReader ExecuteReader(string storedProcedure, List<SqlParameter> parameters = null)
        {
                    SqlCommand cmdExecuteReader = new SqlCommand()
                    {
                        CommandType = System.Data.CommandType.Text,
                        Connection = conn,
                        CommandText = storedProcedure
                    };

                    if (parameters != null)
                    {
                        foreach (SqlParameter param in parameters)
                        {
                            cmdExecuteReader.Parameters.AddWithValue(param.ParameterName, param.Value);
                        }
                    }

                    if (conn.State == System.Data.ConnectionState.Closed)
                        conn.Open();
                    return cmdExecuteReader.ExecuteReader();
       }

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