/// <summary> /// DataTable转List /// </summary> public List <Model.user_attach_log> DataTableToList(DataTable dt) { //datatable没有数据 返回null if (dt == null || dt.Rows.Count == 0) { return(null); } //model的容器 List <Model.user_attach_log> modelList = new List <Model.user_attach_log>(); //datatable可能有很多行数据,遍历每一行 foreach (DataRow dr in dt.Rows) { Model.user_attach_log model = new Model.user_attach_log(); for (int i = 0; i < dr.Table.Columns.Count; i++) { //发现datatable的列属性 PropertyInfo propertyInfo = model.GetType().GetProperty(dr.Table.Columns[i].ColumnName); if (propertyInfo != null && dr[i] != DBNull.Value) { //用索引值设置属性值 propertyInfo.SetValue(model, dr[i], null); } } modelList.Add(model); } return(modelList); }
/// <summary> /// 更新一条数据 /// </summary> public bool Update(Model.user_attach_log model) { StringBuilder strSql = new StringBuilder(); StringBuilder str1 = new StringBuilder(); //利用反射获得属性的所有公共属性 PropertyInfo[] pros = model.GetType().GetProperties(); List <SqlParameter> paras = new List <SqlParameter>(); strSql.Append("update " + databaseprefix + "user_attach_log set "); foreach (PropertyInfo pi in pros) { //如果不是主键则追加sql字符串 if (!pi.Name.Equals("id")) { //判断属性值是否为空 if (pi.GetValue(model, null) != null) { str1.Append(pi.Name + "=@" + pi.Name + ","); //声明参数 paras.Add(new SqlParameter("@" + pi.Name, pi.GetValue(model, null))); //对参数赋值 } } } strSql.Append(str1.ToString().Trim(',')); strSql.Append(" where id=@id"); paras.Add(new SqlParameter("@id", model.id)); return(DbHelperSQL.ExecuteSql(strSql.ToString(), paras.ToArray()) > 0); }
/// <summary> /// 得到一个对象实体 /// </summary> public Model.user_attach_log GetModel(int id) { StringBuilder strSql = new StringBuilder(); StringBuilder str1 = new StringBuilder(); Model.user_attach_log model = new Model.user_attach_log(); //利用反射获得属性的所有公共属性 PropertyInfo[] pros = model.GetType().GetProperties(); foreach (PropertyInfo p in pros) { str1.Append(p.Name + ",");//拼接字段 } strSql.Append("select top 1 " + str1.ToString().Trim(',')); strSql.Append(" from " + databaseprefix + "user_attach_log"); strSql.Append(" where id=@id"); SqlParameter[] parameters = { new SqlParameter("@id", SqlDbType.Int, 4) }; parameters[0].Value = id; DataTable dt = DbHelperSQL.Query(strSql.ToString(), parameters).Tables[0]; if (dt.Rows.Count > 0) { return(DataRowToModel(dt.Rows[0])); } else { return(null); } }
/// <summary> /// 将对象转换实体 /// </summary> public Model.user_attach_log DataRowToModel(DataRow row) { Model.user_attach_log model = new Model.user_attach_log(); if (row != null) { //利用反射获得属性的所有公共属性 Type modelType = model.GetType(); for (int i = 0; i < row.Table.Columns.Count; i++) { //查找实体是否存在列表相同的公共属性 PropertyInfo proInfo = modelType.GetProperty(row.Table.Columns[i].ColumnName); if (proInfo != null && row[i] != DBNull.Value) { proInfo.SetValue(model, row[i], null);//用索引值设置属性值 } } } return(model); }
/// <summary> /// 插入一条下载附件记录 /// </summary> public int AddLog(Model.user_attach_log model) { int i = 0; StringBuilder strSql = new StringBuilder(); StringBuilder str1 = new StringBuilder(); //数据字段 StringBuilder str2 = new StringBuilder(); //数据参数 //利用反射获得属性的所有公共属性 PropertyInfo[] pros = model.GetType().GetProperties(); List <object> paras = new List <object>(); strSql.Append("insert into " + databaseprefix + "dt_user_attach_log("); foreach (PropertyInfo pi in pros) { //如果不是主键则追加sql字符串 if (!pi.Name.Equals("id")) { //判断属性值是否为空 if (pi.GetValue(model, null) != null && !pi.GetValue(model, null).ToString().Equals("")) { str1.Append(pi.Name + ","); //拼接字段 str2.Append("@" + i + ","); //声明参数 i++; paras.Add(pi.GetValue(model, null)); //对参数赋值 } } } strSql.Append(str1.ToString().Trim(',')); strSql.Append(") values ("); strSql.Append(str2.ToString().Trim(',')); strSql.Append(") "); strSql.Append(";SELECT @@@IDENTITY;"); object obj = WriteDataBase.ExecuteScalar <object>(strSql.ToString(), paras.ToArray()); if (obj == null) { return(0); } else { return(Convert.ToInt32(obj)); } }
/// <summary> /// 插入一条下载附件记录 /// </summary> public int AddLog(Model.user_attach_log model) { StringBuilder strSql = new StringBuilder(); StringBuilder str1 = new StringBuilder(); //数据字段 StringBuilder str2 = new StringBuilder(); //数据参数 //利用反射获得属性的所有公共属性 PropertyInfo[] pros = model.GetType().GetProperties(); List <MySqlParameter> paras = new List <MySqlParameter>(); strSql.Append("insert into " + databaseprefix + "user_attach_log("); foreach (PropertyInfo pi in pros) { //如果不是主键则追加sql字符串 if (!pi.Name.Equals("id")) { //判断属性值是否为空 if (pi.GetValue(model, null) != null) { str1.Append(pi.Name + ","); //拼接字段 str2.Append("@" + pi.Name + ","); //声明参数 paras.Add(new MySqlParameter("@" + pi.Name, pi.GetValue(model, null))); //对参数赋值 } } } strSql.Append(str1.ToString().Trim(',')); strSql.Append(") values ("); strSql.Append(str2.ToString().Trim(',')); strSql.Append(") "); strSql.Append(";select @@IDENTITY;"); object obj = DbHelperMySql.GetSingle(strSql.ToString(), paras.ToArray()); if (obj == null) { return(0); } else { return(Convert.ToInt32(obj)); } }