/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(DogApi.Model.FriendModel model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update friend set ");
strSql.Append("username=@username,");
strSql.Append("fusername=@fusername");
strSql.Append(" where fid=@fid ");
SQLiteParameter[] parameters =
{
new SQLiteParameter("@username", DbType.String, 50),
new SQLiteParameter("@fusername", DbType.String, 50),
new SQLiteParameter("@fid", DbType.Int32, 4)
};
parameters[0].Value = model.username;
parameters[1].Value = model.fusername;
parameters[2].Value = model.fid;
int rows = DbHelperSQLite.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public bool Add(DogApi.Model.FriendModel model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into friend(");
strSql.Append("fid,username,fusername)");
strSql.Append(" values (");
strSql.Append("@fid,@username,@fusername)");
SQLiteParameter[] parameters =
{
new SQLiteParameter("@fid", DbType.Int32, 4),
new SQLiteParameter("@username", DbType.String, 50),
new SQLiteParameter("@fusername", DbType.String, 50)
};
parameters[0].Value = model.fid;
parameters[1].Value = model.username;
parameters[2].Value = model.fusername;
int rows = DbHelperSQLite.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public DogApi.Model.FriendModel DataRowToModel(DataRow row)
{
DogApi.Model.FriendModel model = new DogApi.Model.FriendModel();
if (row != null)
{
if (row["fid"] != null && row["fid"].ToString() != "")
{
model.fid = int.Parse(row["fid"].ToString());
}
if (row["username"] != null)
{
model.username = row["username"].ToString();
}
if (row["fusername"] != null)
{
model.fusername = row["fusername"].ToString();
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public DogApi.Model.FriendModel GetModel(int fid)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select fid,username,fusername from friend ");
strSql.Append(" where fid=@fid ");
SQLiteParameter[] parameters =
{
new SQLiteParameter("@fid", DbType.Int32, 4)
};
parameters[0].Value = fid;
DogApi.Model.FriendModel model = new DogApi.Model.FriendModel();
DataSet ds = DbHelperSQLite.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
