/// <summary>
/// 增加一条数据
/// </summary>
public int Add(OLBookstore.Model.BookRatings model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into BookRatings(");
strSql.Append("BookId,UserId,Rating,Comment,CreatedTime)");
strSql.Append(" values (");
strSql.Append("@BookId,@UserId,@Rating,@Comment,@CreatedTime)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@BookId", SqlDbType.Int, 4),
new SqlParameter("@UserId", SqlDbType.Int, 4),
new SqlParameter("@Rating", SqlDbType.Int, 4),
new SqlParameter("@Comment", SqlDbType.NVarChar, -1),
new SqlParameter("@CreatedTime", SqlDbType.DateTime)
};
parameters[0].Value = model.BookId;
parameters[1].Value = model.UserId;
parameters[2].Value = model.Rating;
parameters[3].Value = model.Comment;
parameters[4].Value = model.CreatedTime;
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 OLBookstore.Model.BookRatings DataRowToModel(DataRow row)
{
OLBookstore.Model.BookRatings model = new OLBookstore.Model.BookRatings();
if (row != null)
{
if (row["Id"] != null && row["Id"].ToString() != "")
{
model.Id = int.Parse(row["Id"].ToString());
}
if (row["BookId"] != null && row["BookId"].ToString() != "")
{
model.BookId = int.Parse(row["BookId"].ToString());
}
if (row["UserId"] != null && row["UserId"].ToString() != "")
{
model.UserId = int.Parse(row["UserId"].ToString());
}
if (row["Rating"] != null && row["Rating"].ToString() != "")
{
model.Rating = int.Parse(row["Rating"].ToString());
}
if (row["Comment"] != null)
{
model.Comment = row["Comment"].ToString();
}
if (row["CreatedTime"] != null && row["CreatedTime"].ToString() != "")
{
model.CreatedTime = DateTime.Parse(row["CreatedTime"].ToString());
}
}
return(model);
}
private void ShowInfo(int Id)
{
OLBookstore.BLL.BookRatingsManager bll = new OLBookstore.BLL.BookRatingsManager();
OLBookstore.Model.BookRatings model = bll.GetModel(Id);
this.lblId.Text = model.Id.ToString();
this.lblBookId.Text = model.BookId.ToString();
this.lblUserId.Text = model.UserId.ToString();
this.lblRating.Text = model.Rating.ToString();
this.lblComment.Text = model.Comment;
this.lblCreatedTime.Text = model.CreatedTime.ToString();
}
public void btnSave_Click(object sender, EventArgs e)
{
string strErr = "";
if (!PageValidate.IsNumber(txtBookId.Text))
{
strErr += "BookId格式错误！\\n";
}
if (!PageValidate.IsNumber(txtUserId.Text))
{
strErr += "UserId格式错误！\\n";
}
if (!PageValidate.IsNumber(txtRating.Text))
{
strErr += "Rating格式错误！\\n";
}
if (this.txtComment.Text.Trim().Length == 0)
{
strErr += "Comment不能为空！\\n";
}
if (!PageValidate.IsDateTime(txtCreatedTime.Text))
{
strErr += "CreatedTime格式错误！\\n";
}
if (strErr != "")
{
MessageBox.Show(this, strErr);
return;
}
int Id = int.Parse(this.lblId.Text);
int BookId = int.Parse(this.txtBookId.Text);
int UserId = int.Parse(this.txtUserId.Text);
int Rating = int.Parse(this.txtRating.Text);
string Comment = this.txtComment.Text;
DateTime CreatedTime = DateTime.Parse(this.txtCreatedTime.Text);
OLBookstore.Model.BookRatings model = new OLBookstore.Model.BookRatings();
model.Id = Id;
model.BookId = BookId;
model.UserId = UserId;
model.Rating = Rating;
model.Comment = Comment;
model.CreatedTime = CreatedTime;
OLBookstore.BLL.BookRatingsManager bll = new OLBookstore.BLL.BookRatingsManager();
bll.Update(model);
Maticsoft.Common.MessageBox.ShowAndRedirect(this, "保存成功！", "list.aspx");
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(OLBookstore.Model.BookRatings model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update BookRatings set ");
strSql.Append("BookId=@BookId,");
strSql.Append("UserId=@UserId,");
strSql.Append("Rating=@Rating,");
strSql.Append("Comment=@Comment,");
strSql.Append("CreatedTime=@CreatedTime");
strSql.Append(" where Id=@Id");
SqlParameter[] parameters =
{
new SqlParameter("@BookId", SqlDbType.Int, 4),
new SqlParameter("@UserId", SqlDbType.Int, 4),
new SqlParameter("@Rating", SqlDbType.Int, 4),
new SqlParameter("@Comment", SqlDbType.NVarChar, -1),
new SqlParameter("@CreatedTime", SqlDbType.DateTime),
new SqlParameter("@Id", SqlDbType.Int, 4)
};
parameters[0].Value = model.BookId;
parameters[1].Value = model.UserId;
parameters[2].Value = model.Rating;
parameters[3].Value = model.Comment;
parameters[4].Value = model.CreatedTime;
parameters[5].Value = model.Id;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public OLBookstore.Model.BookRatings GetModel(int Id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 Id,BookId,UserId,Rating,Comment,CreatedTime from BookRatings ");
strSql.Append(" where Id=@Id");
SqlParameter[] parameters =
{
new SqlParameter("@Id", SqlDbType.Int, 4)
};
parameters[0].Value = Id;
OLBookstore.Model.BookRatings model = new OLBookstore.Model.BookRatings();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
