Question

在我的Datatable列中有一些特殊字符。所以想要删除有特殊字符的行。

我的数据表：

姓名联系人

Alex 9848598485

Paul @ 9955221100

麦克风＃9988552211

我想删除第二行和第三行的原因，因为它有特殊字符。我喜欢

这样的特殊字符

string [] chars=new string[] { ",", ".", "/", "!", "@", "#", "$", 
 "%", "^", "&", "*", "'", "\"", ";","_", "(", ")", ":", "|", "[", "]" }; 


public void deletespecialchars(DataTable dt, string[] ch)
  {


        ArrayList al = new ArrayList();
      foreach (DataColumn row in dt.Columns)
        {
            if(al.Contains(ch))
                al.Add(row);
            if (al.Count > 0)
            {
                foreach (DataColumn dcol1 in al)
                {
                    dt.Columns.Remove(dcol1);
                }
            }

        }
    }

当我把这种方法称为

时

deletespecialchars(dt,chars);

我不删除特殊字符。请帮助我

Answer 1

以下是根据我的理解你可以做什么的一个例子......你的变量名和加载数据的过程会有所不同。您可以使用Regex和Linq以更少的代码来实现相同的结果。

        //array of bad chars you don't want in your data - Must be of char type 
        char [] chars=new char[] { '$','-','#'}; //Add all bad chars here...
        //define and load the datatable
        DataTable dt = new DataTable("test");
        DataColumn c0 = new DataColumn("Contacts");
        dt.Columns.Add(c0);
        DataColumn c1 = new DataColumn("Serial");
        dt.Columns.Add("c1");
        DataColumn c3 = new DataColumn("Notes");
        dt.Columns.Add(c3);
        //load some data
        dt.Rows.Add(new object[]  {"a","1234$542341","no$$tes1"} );
        dt.Rows.Add(new object[]  {"b#","12342241","notes2"} );
        dt.Rows.Add(new object[] { "c?", "-421341", "notes3" });
        dt.Rows.Add(new object[] { "DD", "12345", "notes3" });

        //loop through each cell, when a cell contains bad data,
        //remove the entire row and skip remainig cells 

        if (dt == null) return;
        Console.WriteLine("Rows before:" + dt.Rows.Count.ToString());
        if (dt.Rows.Count == 0) return;

        int c = dt.Rows.Count;

        for (int r = c-1; r > -1; r--)
        {
            Console.WriteLine("***Row: "); 

            foreach (var item in dt.Rows[r].ItemArray) // Loop over the items.
            {
                if (item.ToString().IndexOfAny(chars) > -1)
                {
                    Console.Write("Bad Content: ");
                    Console.WriteLine(item);
                    dt.Rows[r].Delete(); //remove row
                    break;//skip remaining cells
                }
            }
        }
        dt.AcceptChanges();
        Console.WriteLine("Rows after:"+dt.Rows.Count.ToString());
        Console.Read();

如果datatable在列中有任何特殊字符，如何删除行？

1 个答案: