/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(LPWeb.Model.UserRecentItems model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update UserRecentItems set ");
strSql.Append("FileId=@FileId");
strSql.Append(" where UserId=@UserId and LastAccessed=@LastAccessed ");
SqlParameter[] parameters =
{
new SqlParameter("@UserId", SqlDbType.Int, 4),
new SqlParameter("@LastAccessed", SqlDbType.DateTime),
new SqlParameter("@FileId", SqlDbType.Int, 4)
};
parameters[0].Value = model.UserId;
parameters[1].Value = model.LastAccessed;
parameters[2].Value = model.FileId;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public void Add(LPWeb.Model.UserRecentItems model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into UserRecentItems(");
strSql.Append("UserId,LastAccessed,FileId)");
strSql.Append(" values (");
strSql.Append("@UserId,@LastAccessed,@FileId)");
SqlParameter[] parameters =
{
new SqlParameter("@UserId", SqlDbType.Int, 4),
new SqlParameter("@LastAccessed", SqlDbType.DateTime),
new SqlParameter("@FileId", SqlDbType.Int, 4)
};
parameters[0].Value = model.UserId;
parameters[1].Value = model.LastAccessed;
parameters[2].Value = model.FileId;
DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public LPWeb.Model.UserRecentItems GetModel(int UserId, DateTime LastAccessed)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 UserId,LastAccessed,FileId from UserRecentItems ");
strSql.Append(" where UserId=@UserId and LastAccessed=@LastAccessed ");
SqlParameter[] parameters =
{
new SqlParameter("@UserId", SqlDbType.Int, 4),
new SqlParameter("@LastAccessed", SqlDbType.DateTime)
};
parameters[0].Value = UserId;
parameters[1].Value = LastAccessed;
LPWeb.Model.UserRecentItems model = new LPWeb.Model.UserRecentItems();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
if (ds.Tables[0].Rows[0]["UserId"].ToString() != "")
{
model.UserId = int.Parse(ds.Tables[0].Rows[0]["UserId"].ToString());
}
if (ds.Tables[0].Rows[0]["LastAccessed"].ToString() != "")
{
model.LastAccessed = DateTime.Parse(ds.Tables[0].Rows[0]["LastAccessed"].ToString());
}
if (ds.Tables[0].Rows[0]["FileId"].ToString() != "")
{
model.FileId = int.Parse(ds.Tables[0].Rows[0]["FileId"].ToString());
}
return(model);
}
else
{
return(null);
}
}
