/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(FriendshipMngSys.Model.DBFriendship model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update Friendship set ");
strSql.Append("PersonID=@PersonID,");
strSql.Append("FriendID=@FriendID");
strSql.Append(" where ID=@ID ");
SQLiteParameter[] parameters =
{
new SQLiteParameter("@PersonID", DbType.String, 2147483647),
new SQLiteParameter("@FriendID", DbType.String, 2147483647),
new SQLiteParameter("@ID", DbType.String, 2147483647)
};
parameters[0].Value = model.PersonID;
parameters[1].Value = model.FriendID;
parameters[2].Value = model.ID;
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(FriendshipMngSys.Model.DBFriendship model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into Friendship(");
strSql.Append("ID,PersonID,FriendID)");
strSql.Append(" values (");
strSql.Append("@ID,@PersonID,@FriendID)");
SQLiteParameter[] parameters =
{
new SQLiteParameter("@ID", DbType.String, 2147483647),
new SQLiteParameter("@PersonID", DbType.String, 2147483647),
new SQLiteParameter("@FriendID", DbType.String, 2147483647)
};
parameters[0].Value = model.ID;
parameters[1].Value = model.PersonID;
parameters[2].Value = model.FriendID;
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 FriendshipMngSys.Model.DBFriendship DataRowToModel(DataRow row)
{
FriendshipMngSys.Model.DBFriendship model = new FriendshipMngSys.Model.DBFriendship();
if (row != null)
{
if (row["ID"] != null)
{
model.ID = row["ID"].ToString();
}
if (row["PersonID"] != null)
{
model.PersonID = row["PersonID"].ToString();
}
if (row["FriendID"] != null)
{
model.FriendID = row["FriendID"].ToString();
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public FriendshipMngSys.Model.DBFriendship GetModel(string ID)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select ID,PersonID,FriendID from Friendship ");
strSql.Append(" where ID=@ID ");
SQLiteParameter[] parameters =
{
new SQLiteParameter("@ID", DbType.String, 2147483647)
};
parameters[0].Value = ID;
FriendshipMngSys.Model.DBFriendship model = new FriendshipMngSys.Model.DBFriendship();
DataSet ds = DbHelperSQLite.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
