使用List.add后所有数据都变成了最后一次添加的数据，我在每次调用list.add前都new了一次，不知道为啥还是会把前面的数据都覆盖掉
我代码如下
public List<getCommentClass> old_comment_list = new List<getCommentClass>();
private void Button1_Click(object sender, EventArgs e)
{
getCommentClass old_comment_obj;
OpenFileDialog ofd = new OpenFileDialog();
ofd.ShowDialog();
old_file_path = ofd.FileName;
Console.WriteLine(ofd.FileName);
app_old = new Microsoft.Office.Interop.Excel.Application();
wbks_old = app_old.Workbooks;
_wbk_old = wbks_old.Add(old_file_path);
Sheets shs_old = _wbk_old.Sheets;
_Worksheet _wsh_old = (_Worksheet)shs_old.get_Item(1);
Console.WriteLine("old sheet count: " + shs_old.Count.ToString());
Console.WriteLine("_wsh_old :" + _wsh_old.Name);
//Range range1 = _wsh_old.Cells[3, 9];
//Console.WriteLine("_wsh_old.Cells :" + range1.Text);
//Console.WriteLine("_wsh_old.Cells.comment :" + range1.Comment.Text());
//return;
int shs_line_index = 2;
int shs_row_start = 2;
int shs_row_end = 22;
int shs_check_comment_row_index = 9;
int shs_start_check_comment_row = 9;
int shs_end_check_comment_row = 29;
button1.Text = "分析数据...";
button1.Enabled = false;
button2.Enabled = false;
button3.Enabled = false;
//old_comment_list.Clear();
int need_to_import = 0;
while (true)
{
Console.WriteLine("shs_line_index: " + shs_line_index.ToString() +
"shs_row_start:" + shs_row_start.ToString());
Range range = _wsh_old.Cells[shs_line_index, shs_row_start];
if (range.Text == "")
{
break; //查询到为空时结束循环
}
Console.WriteLine("shs_line_index: " + shs_line_index.ToString() +
"shs_check_comment_mrow_index:" + shs_check_comment_row_index.ToString());
old_comment_obj = new getCommentClass();
List<Range> range_list = new List<Range>();
for (int i = 0; i < shs_end_check_comment_row - shs_start_check_comment_row; i++)
{
range_list.Add(_wsh_old.Cells[shs_line_index, shs_start_check_comment_row + i]);
}
old_comment_obj.cell_has_import = true;
if (old_comment_obj.process_comment(range_list))
{
old_comment_obj.cell_date_range = _wsh_old.Cells[shs_line_index, old_comment_obj.cell_date_range_index].Text;
old_comment_obj.cell_client_range = _wsh_old.Cells[shs_line_index, old_comment_obj.cell_client_range_index].Text;
old_comment_obj.cell_order_number_range = _wsh_old.Cells[shs_line_index, old_comment_obj.cell_order_number_range_index].Text;
old_comment_obj.cell_type_range = _wsh_old.Cells[shs_line_index, old_comment_obj.cell_type_range_index].Text;
old_comment_obj.cell_commodity_range = _wsh_old.Cells[shs_line_index, old_comment_obj.cell_commodity_range_index].Text;
old_comment_obj.cell_number_range = _wsh_old.Cells[shs_line_index, old_comment_obj.cell_number_range_index].Text;
old_comment_obj.cell_price_range = _wsh_old.Cells[shs_line_index, old_comment_obj.cell_price_range_index].Text;
old_comment_obj.cell_has_import = false;
need_to_import++;
//old_comment_list[old_comment_list_count++] = old_comment_obj;
old_comment_list.Add(old_comment_obj);
Console.Write("comment_obj:--" + old_comment_obj.cell_date_range.ToString());
Console.Write("--" + old_comment_obj.cell_client_range.ToString());
Console.Write("--" + old_comment_obj.cell_order_number_range.ToString());
Console.Write("--" + old_comment_obj.cell_type_range.ToString());
Console.Write("--" + old_comment_obj.cell_commodity_range.ToString());
Console.Write("--" + old_comment_obj.cell_number_range.ToString());
Console.WriteLine("--" + old_comment_obj.cell_price_range.ToString());
}
shs_line_index++;
}
Console.WriteLine("old_comment_list.count: " + old_comment_list .Count.ToString() + "-----need_to_import:"+ need_to_import.ToString());
//Console.WriteLine("old_comment_list.count: " + old_comment_list_count.ToString() + "-----need_to_import:" + need_to_import.ToString());
button1.Enabled = true;
button2.Enabled = true;
button3.Enabled = true;
}
其中 getCommentClass 类实现如下
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Office.Interop.Excel;
namespace excel_import_data
{
public struct storage_comment_obj
{
public string str;
public int row_num;
};
//
// 摘要:
// 用于存放有批注的行，及相关匹配字符串内容信息
public class getCommentClass
{
public static bool has_comment ;
public static string _cell_date_range ;
public static string _cell_client_range;
public static string _cell_order_number_range;
public static string _cell_type_range ;
public static string _cell_commodity_range;
public static string _cell_number_range ;
public static string _cell_price_range;
//
// 摘要:
// 缓存元素
public List<storage_comment_obj> cell_group ;
//
// 摘要:
// 是否该行有批注
public bool cell_has_comment { get { return has_comment; } }
//
// 摘要:
// 是否已导入
public bool cell_has_import { get; set; }
//
// 摘要:
// 元素：日期信息 --- 第二列
public string cell_date_range
{
get { return _cell_date_range; }
set { _cell_date_range = value; }
}
//
// 摘要:
// 元素：日期信息索引 --- 第二列
public int cell_date_range_index { get { return 2; } }
//
// 摘要:
// 元素：客户信息 --- 第三列
public string cell_client_range
{
get { return _cell_client_range; }
set { _cell_client_range = value; }
}
//
// 摘要:
// 元素：客户信息索引 --- 第三列
public int cell_client_range_index { get { return 3; } }
//
// 摘要:
// 元素：订单号 --- 第四列
public string cell_order_number_range
{
get { return _cell_order_number_range; }
set { _cell_order_number_range = value; }
}
//
// 摘要:
// 元素：订单号索引 --- 第四列
public int cell_order_number_range_index { get { return 4; } }
//
// 摘要:
// 元素：车型 --- 第五列
public string cell_type_range
{
get { return _cell_type_range; }
set { _cell_type_range = value; }
}
//
// 摘要:
// 元素：车型索引 --- 第五列
public int cell_type_range_index { get { return 5; } }
//
// 摘要:
// 元素：商品名称 --- 第六列
public string cell_commodity_range
{
get { return _cell_commodity_range; }
set { _cell_commodity_range = value; }
}
//
// 摘要:
// 元素：商品名称索引 --- 第六列
public int cell_commodity_range_index { get { return 6; } }
//
// 摘要:
// 元素：数量 --- 第七列
public string cell_number_range
{
get { return _cell_number_range; }
set { _cell_number_range = value; }
}
//
// 摘要:
// 元素：数量名称索引 --- 第七列
public int cell_number_range_index { get { return 7; } }
//
// 摘要:
// 元素：销售单价 --- 第八列
public string cell_price_range
{
get { return _cell_price_range; }
set { _cell_price_range = value; }
}
//
// 摘要:
// 元素：销售单价索引 --- 第八列
public int cell_price_range_index { get { return 8; } }
//
// 摘要:
// 最大缓存元素22个
public int cell_max_num { get { return 22; } }
//
// 摘要:
// 载入数据
public bool process_comment(List<Range> range_list)
{
int shs_start_check_comment_row = 9;
has_comment = false;
for (int index = 0; index < range_list.Count; index++)
{
if (range_list[index].Comment != null)
{
has_comment = true;
storage_comment_obj obj = new storage_comment_obj();
obj.row_num = index + shs_start_check_comment_row;
obj.str = range_list[index].Comment.Text();
cell_group.Add(obj);
}
}
return has_comment;
}
public getCommentClass()
{
cell_group = new List<storage_comment_obj>();
}
}
}
public List<Tree> UserList()
{
cmd.Connection = conn; //设置数据链接
cmd.CommandText = "select ID,name,pid from Tree"; //设置查询语句
conn.Open(); //打开数据库连接
SqlDataReader dr = cmd.ExecuteReader(); //执行Reader查询，存入dr
List<Tree> u1 = new List<Tree>(); //新建一个User类的集合
while (dr.Read())//遍历dr
{
Tree u0 = new Tree(); //临时User类变量u0
//把查询的当前记录各字段值赋值给对于小蜜蜂论坛顶帖机的u0的属性
u0.ID = Convert.ToInt32(dr["ID"]);
u0.PID = Convert.ToInt32(dr["PID"].ToString());
u0.NAME = dr["NAME"].ToString();
u1.Add(u0);//把有数据的u0加入到User类的集合
}
conn.Close(); //关闭数据库连接
//循环结束后，每一个用户数据都会被加入到用户类集合u1,最后返回u1
return u1;
}
断点跟踪一下ADD中U0看一下.
List<Data> d = new List<Data>();
Data data3 = new Data();
for (int i = 0; i < 100; i++)
{
data3.Money = i;
d.Add(data3);
}
上面这种情况就会有问题，你要在循环里面new
getCommentClass
所有static 去掉
public static bool has_comment ;
public static string _cell_date_range ;
public static string _cell_client_range;
public static string _cell_order_number_range;
public static string _cell_type_range ;
public static string _cell_commodity_range;
public static string _cell_number_range ;
public static string _cell_price_range;
谢谢，还真是这个问题
