/// <summary>
/// 得到一个对象实体
/// </summary>
public TSIMSServer.Model.t_book DataRowToModel(DataRow row)
{
TSIMSServer.Model.t_book model = new TSIMSServer.Model.t_book();
if (row != null)
{
if (row["isbn"] != null)
{
model.isbn = row["isbn"].ToString();
}
if (row["book_name"] != null)
{
model.book_name = row["book_name"].ToString();
}
if (row["author"] != null)
{
model.author = row["author"].ToString();
}
if (row["price"] != null && row["price"].ToString() != "")
{
model.price = decimal.Parse(row["price"].ToString());
}
if (row["publisher"] != null)
{
model.publisher = row["publisher"].ToString();
}
if (row["edition"] != null)
{
model.edition = row["edition"].ToString();
}
}
return(model);
}
/// <summary>
/// 增加一条数据
/// </summary>
public bool Add(TSIMSServer.Model.t_book model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into t_book(");
strSql.Append("isbn,book_name,author,price,publisher,edition)");
strSql.Append(" values (");
strSql.Append("@isbn,@book_name,@author,@price,@publisher,@edition)");
MySqlParameter[] parameters =
{
new MySqlParameter("@isbn", MySqlDbType.VarChar, 50),
new MySqlParameter("@book_name", MySqlDbType.VarChar, 100),
new MySqlParameter("@author", MySqlDbType.VarChar, 100),
new MySqlParameter("@price", MySqlDbType.Decimal, 10),
new MySqlParameter("@publisher", MySqlDbType.VarChar, 100),
new MySqlParameter("@edition", MySqlDbType.VarChar, 100)
};
parameters[0].Value = model.isbn;
parameters[1].Value = model.book_name;
parameters[2].Value = model.author;
parameters[3].Value = model.price;
parameters[4].Value = model.publisher;
parameters[5].Value = model.edition;
int rows = DbHelperMySQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(TSIMSServer.Model.t_book model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update t_book set ");
strSql.Append("book_name=@book_name,");
strSql.Append("author=@author,");
strSql.Append("price=@price,");
strSql.Append("publisher=@publisher,");
strSql.Append("edition=@edition");
strSql.Append(" where isbn=@isbn ");
MySqlParameter[] parameters =
{
new MySqlParameter("@book_name", MySqlDbType.VarChar, 100),
new MySqlParameter("@author", MySqlDbType.VarChar, 100),
new MySqlParameter("@price", MySqlDbType.Decimal, 10),
new MySqlParameter("@publisher", MySqlDbType.VarChar, 100),
new MySqlParameter("@edition", MySqlDbType.VarChar, 100),
new MySqlParameter("@isbn", MySqlDbType.VarChar, 50)
};
parameters[0].Value = model.book_name;
parameters[1].Value = model.author;
parameters[2].Value = model.price;
parameters[3].Value = model.publisher;
parameters[4].Value = model.edition;
parameters[5].Value = model.isbn;
int rows = DbHelperMySQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public TSIMSServer.Model.t_book GetModel(string isbn)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select isbn,book_name,author,price,publisher,edition from t_book ");
strSql.Append(" where isbn=@isbn ");
MySqlParameter[] parameters =
{
new MySqlParameter("@isbn", MySqlDbType.VarChar, 50)
};
parameters[0].Value = isbn;
TSIMSServer.Model.t_book model = new TSIMSServer.Model.t_book();
DataSet ds = DbHelperMySQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
