参数不会从F#传递到MySql存储过程

open MySql.Data.MySqlClient

let connectionString = "YourConnectionString"

let callStoredProcedure (param1: string) =
    use connection = new MySqlConnection(connectionString)
    connection.Open()
    
    use command = new MySqlCommand("YourStoredProcedureName", connection)
    command.CommandType <- CommandType.StoredProcedure
    
    // 添加输入参数
    command.Parameters.AddWithValue("@Param1", param1) |> ignore
    
    // 添加输出参数
    let outputParam = new MySqlParameter("@OutputParam", MySqlDbType.VarChar)
    outputParam.Direction <- ParameterDirection.Output
    command.Parameters.Add(outputParam) |> ignore
    
    command.ExecuteNonQuery() |> ignore
    
    // 获取输出参数的值
    let outputValue = command.Parameters["@OutputParam"].Value.ToString()
    
    outputValue

let result = callStoredProcedure "Param1Value"