/// <summary>
/// 增加一条数据
/// </summary>
public int Add(book_shop.Model.BooksModel model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into Books(");
strSql.Append("Title,Author,PublisherId,PublishDate,ISBN,WordsCount,UnitPrice,ContentDescription,AurhorDescription,EditorComment,TOC,CategoryId,Clicks)");
strSql.Append(" values (");
strSql.Append("@Title,@Author,@PublisherId,@PublishDate,@ISBN,@WordsCount,@UnitPrice,@ContentDescription,@AurhorDescription,@EditorComment,@TOC,@CategoryId,@Clicks)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@Title", SqlDbType.NVarChar, 200),
new SqlParameter("@Author", SqlDbType.NVarChar, 200),
new SqlParameter("@PublisherId", SqlDbType.Int, 4),
new SqlParameter("@PublishDate", SqlDbType.DateTime),
new SqlParameter("@ISBN", SqlDbType.NVarChar, 50),
new SqlParameter("@WordsCount", SqlDbType.Int, 4),
new SqlParameter("@UnitPrice", SqlDbType.Money, 8),
new SqlParameter("@ContentDescription", SqlDbType.NVarChar, -1),
new SqlParameter("@AurhorDescription", SqlDbType.NVarChar, -1),
new SqlParameter("@EditorComment", SqlDbType.NVarChar, -1),
new SqlParameter("@TOC", SqlDbType.NVarChar, -1),
new SqlParameter("@CategoryId", SqlDbType.Int, 4),
new SqlParameter("@Clicks", SqlDbType.Int, 4)
};
parameters[0].Value = model.Title;
parameters[1].Value = model.Author;
parameters[2].Value = model.PublisherId;
parameters[3].Value = model.PublishDate;
parameters[4].Value = model.ISBN;
parameters[5].Value = model.WordsCount;
parameters[6].Value = model.UnitPrice;
parameters[7].Value = model.ContentDescription;
parameters[8].Value = model.AurhorDescription;
parameters[9].Value = model.EditorComment;
parameters[10].Value = model.TOC;
parameters[11].Value = model.CategoryId;
parameters[12].Value = model.Clicks;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public book_shop.Model.BooksModel GetModel(int Id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 Id,Title,Author,PublisherId,PublishDate,ISBN,WordsCount,UnitPrice,ContentDescription,AurhorDescription,EditorComment,TOC,CategoryId,Clicks from Books ");
strSql.Append(" where Id=@Id");
SqlParameter[] parameters =
{
new SqlParameter("@Id", SqlDbType.Int, 4)
};
parameters[0].Value = Id;
book_shop.Model.BooksModel model = new book_shop.Model.BooksModel();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public book_shop.Model.BooksModel DataRowToModel(DataRow row)
{
book_shop.Model.BooksModel model = new book_shop.Model.BooksModel();
if (row != null)
{
if (row["Id"] != null && row["Id"].ToString() != "")
{
model.Id = int.Parse(row["Id"].ToString());
}
if (row["Title"] != null)
{
model.Title = row["Title"].ToString();
}
if (row["Author"] != null)
{
model.Author = row["Author"].ToString();
}
if (row["PublisherId"] != null && row["PublisherId"].ToString() != "")
{
model.PublisherId = int.Parse(row["PublisherId"].ToString());
}
if (row["PublishDate"] != null && row["PublishDate"].ToString() != "")
{
model.PublishDate = DateTime.Parse(row["PublishDate"].ToString());
}
if (row["ISBN"] != null)
{
model.ISBN = row["ISBN"].ToString();
}
if (row["WordsCount"] != null && row["WordsCount"].ToString() != "")
{
model.WordsCount = int.Parse(row["WordsCount"].ToString());
}
if (row["UnitPrice"] != null && row["UnitPrice"].ToString() != "")
{
model.UnitPrice = decimal.Parse(row["UnitPrice"].ToString());
}
if (row["ContentDescription"] != null)
{
model.ContentDescription = row["ContentDescription"].ToString();
}
if (row["AurhorDescription"] != null)
{
model.AurhorDescription = row["AurhorDescription"].ToString();
}
if (row["EditorComment"] != null)
{
model.EditorComment = row["EditorComment"].ToString();
}
if (row["TOC"] != null)
{
model.TOC = row["TOC"].ToString();
}
if (row["CategoryId"] != null && row["CategoryId"].ToString() != "")
{
model.CategoryId = int.Parse(row["CategoryId"].ToString());
}
if (row["Clicks"] != null && row["Clicks"].ToString() != "")
{
model.Clicks = int.Parse(row["Clicks"].ToString());
}
}
return(model);
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(book_shop.Model.BooksModel model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update Books set ");
strSql.Append("Title=@Title,");
strSql.Append("Author=@Author,");
strSql.Append("PublisherId=@PublisherId,");
strSql.Append("PublishDate=@PublishDate,");
strSql.Append("WordsCount=@WordsCount,");
strSql.Append("UnitPrice=@UnitPrice,");
strSql.Append("ContentDescription=@ContentDescription,");
strSql.Append("AurhorDescription=@AurhorDescription,");
strSql.Append("EditorComment=@EditorComment,");
strSql.Append("TOC=@TOC,");
strSql.Append("CategoryId=@CategoryId,");
strSql.Append("Clicks=@Clicks");
strSql.Append(" where Id=@Id");
SqlParameter[] parameters =
{
new SqlParameter("@Title", SqlDbType.NVarChar, 200),
new SqlParameter("@Author", SqlDbType.NVarChar, 200),
new SqlParameter("@PublisherId", SqlDbType.Int, 4),
new SqlParameter("@PublishDate", SqlDbType.DateTime),
new SqlParameter("@WordsCount", SqlDbType.Int, 4),
new SqlParameter("@UnitPrice", SqlDbType.Money, 8),
new SqlParameter("@ContentDescription", SqlDbType.NVarChar, -1),
new SqlParameter("@AurhorDescription", SqlDbType.NVarChar, -1),
new SqlParameter("@EditorComment", SqlDbType.NVarChar, -1),
new SqlParameter("@TOC", SqlDbType.NVarChar, -1),
new SqlParameter("@CategoryId", SqlDbType.Int, 4),
new SqlParameter("@Clicks", SqlDbType.Int, 4),
new SqlParameter("@Id", SqlDbType.Int, 4),
new SqlParameter("@ISBN", SqlDbType.NVarChar, 50)
};
parameters[0].Value = model.Title;
parameters[1].Value = model.Author;
parameters[2].Value = model.PublisherId;
parameters[3].Value = model.PublishDate;
parameters[4].Value = model.WordsCount;
parameters[5].Value = model.UnitPrice;
parameters[6].Value = model.ContentDescription;
parameters[7].Value = model.AurhorDescription;
parameters[8].Value = model.EditorComment;
parameters[9].Value = model.TOC;
parameters[10].Value = model.CategoryId;
parameters[11].Value = model.Clicks;
parameters[12].Value = model.Id;
parameters[13].Value = model.ISBN;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}