/// <summary>
/// 增加一条数据
/// </summary>
public int Add(DiDaJiangCheng.Model.tbCourseInfo model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into tbCourseInfo(");
strSql.Append("ClassId,CourseName,Semester");
strSql.Append(") values (");
strSql.Append("@ClassId,@CourseName,@Semester");
strSql.Append(") ");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@ClassId", SqlDbType.Int, 4),
new SqlParameter("@CourseName", SqlDbType.NVarChar, 50),
new SqlParameter("@Semester", SqlDbType.NVarChar, 50)
};
parameters[0].Value = model.ClassId;
parameters[1].Value = model.CourseName;
parameters[2].Value = model.Semester;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(DiDaJiangCheng.Model.tbCourseInfo model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update tbCourseInfo set ");
strSql.Append(" ClassId = @ClassId , ");
strSql.Append(" CourseName = @CourseName , ");
strSql.Append(" Semester = @Semester ");
strSql.Append(" where CourseId=@CourseId ");
SqlParameter[] parameters =
{
new SqlParameter("@CourseId", SqlDbType.Int, 4),
new SqlParameter("@ClassId", SqlDbType.Int, 4),
new SqlParameter("@CourseName", SqlDbType.NVarChar, 50),
new SqlParameter("@Semester", SqlDbType.NVarChar, 50)
};
parameters[0].Value = model.CourseId;
parameters[1].Value = model.ClassId;
parameters[2].Value = model.CourseName;
parameters[3].Value = model.Semester;
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 DiDaJiangCheng.Model.tbCourseInfo GetModel(int CourseId)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select CourseId, ClassId, CourseName, Semester ");
strSql.Append(" from tbCourseInfo ");
strSql.Append(" where CourseId=@CourseId");
SqlParameter[] parameters =
{
new SqlParameter("@CourseId", SqlDbType.Int, 4)
};
parameters[0].Value = CourseId;
DiDaJiangCheng.Model.tbCourseInfo model = new DiDaJiangCheng.Model.tbCourseInfo();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
if (ds.Tables[0].Rows[0]["CourseId"].ToString() != "")
{
model.CourseId = int.Parse(ds.Tables[0].Rows[0]["CourseId"].ToString());
}
if (ds.Tables[0].Rows[0]["ClassId"].ToString() != "")
{
model.ClassId = int.Parse(ds.Tables[0].Rows[0]["ClassId"].ToString());
}
model.CourseName = ds.Tables[0].Rows[0]["CourseName"].ToString();
model.Semester = ds.Tables[0].Rows[0]["Semester"].ToString();
return(model);
}
else
{
return(null);
}
}
