如何将列表转换为数据表C# [英] How to convert list to datatable C#

问题描述

我必须循环进入页面并从html表中获取数据，每次循环并获取它们进入列表时，我都将获取列表中的所有数据.如何将它们传递到数据表中，其中列表中的所有行只有一个列和值不同??我尝试将它们转换为字典并将其传递到数据表，但是我得到了重复列的错误?这是我的代码

我尝试过的事情:

i have to loop in page and get data from html table i get all the data in a list each time i loop and get them into list how can i pass them to data table where all the rows of the list has only one column and different in values ?? i try to convert them to dictionary and pass them to data table but i have get error duplicate column ?? this is my code

What I have tried:

List<string> list = new List<string>();
                       if (pagevalue != null)
                       {


                           foreach (HtmlNode data in pagevalue.DocumentNode.SelectNodes("//div"))
                           {
                                 list.Add(infodata.InnerText);
                           }

                           if (list.Count > 0)
                           {

                               var dict = list.ToDictionary(k => k, v => v);

                               foreach (KeyValuePair<string, string> item in dict)
                               {
                                   DataRow dataRow = dt.NewRow();
                                   dt.Columns.Add(item.Key);
                               }

                               DataSet ds = new DataSet();
                               ds.Tables.Add(dt);
                           }

推荐答案

为什么需要字典?试试这个并适应:

Why do you need dictionary? Try this and adapt:

List<string> cities = new List<string>();
cities.Add("New York");
cities.Add("Mumbai");
DataTable table = new DataTable();
table.Columns.Add("column1", typeof (string));
foreach (string str in cities)
{
	DataRow row = table.NewRow();
	row["column1"] = str;
	table.Rows.Add(row);
}

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