这完全取决于你要做的事情：删除一个绝对值（一个永不改变的东西是微不足道的：

  string  Batches =   ,, H104001002，H104001003，H104001004，H104001005; 
 string  changed = Batched.Replace（  H104001002， ）; 

将执行此操作。

但是......如果字符串没有固定或者可以正确地出现在数据的其他位置，那么这不是一个可行的选择。例如，在此处使用该方法：

  string  Batches =   ,, H104001002，H104001003，H104001002，H104001005 

会给你：

,,, H104001003，，H104001005

有很多方法可以做到：你可以分割字符串，杀死坏位置，并重建它：

  string 批次=   ,, H104001002，H104001003，H104001004，H104001005; 
 string  [] parts = Batches.Split（' 跨度>）; 
 parts [ 2 ] =  ; 
 string  changed =  string  .Join（  ，，parts）; 

或者你可以使用正则表达式：

  string  Batches =   ,, H104001002，H104001003，H104001004，H104001005跨度>; 
 string  changed = Regex.Replace（批次， @ （？< = \，\，）。+？（？=，）， ）; 

但是......我建议您查看使用现有的CSV解析器：快速CSV阅读器 [ ^ ]是一个不错的选择。

您可以尝试使用正则表达式（或正则表达式）。在您的情况下，代码将是：

 使用系统; 
使用 System.Text.RegularExpressions; 

 public   class 示例
 {
 public   static   void  Main（）
 {
 string  input =  ，H104001002 ，H104001003，H104001004，H104001005 
 string  pattern =   H104001002\" 跨度>; 
 string  replacement =  ; 
 Regex rgx =  new 正则表达式（模式）; 
 string  result = rgx.Replace（input，replacement）; 

 Console.WriteLine（ 原始字符串：{0}，输入）; 
 Console.WriteLine（ 替换字符串：{0}，结果）; 
} 
} 

  //  使用简单的替换方法。 
 string 批次=  ，H104001002，H104001003，H104001002，H104001004，H104001005; 
 string  find =   H104001002跨度>; 
 Batches = Batches.Replace（find， ）; 


 //  使用Array / List替换它，这将删除空项目 
列表< string> lst =  new  List< string>（）; 
 var  array = Batches.Split（ new   char  [] {' ，'}，StringSplitOptions.RemoveEmptyEntries）; 
 if （array.Contains（find））
 for （ int  i =  0 ; i <  array.Length ; i ++）
 {
 if （array [i]！= find）
 lst.Add（array [i]）; 
} 
批次= 字符串 .Join（ ，，lst）; 

 //  使用Linq  
批次=  string  .Join（ ，，Batches.Split（  new   char  [] {' ，'}，StringSplitOptions.RemoveEmptyEntries）。其中（k = >  k！= find）。ToArray（） ）; 

string Batches = ",,H104001002,H104001003,H104001004,H104001005";

I have this string and i have to remove "H104001002" from the above string in ASP.Net C#.

What I have tried:

I was thinking to use Contains to find the string and Replace to replace it with ""

It depends exactly what you are trying to do: removing an absolute value (one that never changes) is trivial:

string Batches = ",,H104001002,H104001003,H104001004,H104001005";
string changed = Batched.Replace("H104001002", "");

will do it.
But...if string isn't "fixed" or can appear in other places in the data correctly, then that isn't a viable alternative. For example, usign that method on this:

string Batches = ",,H104001002,H104001003,H104001002,H104001005"

Would give you:

",,,H104001003,,H104001005"

There are a number of ways to do it: you could split the string, kill the "bad" location, and rebuild it:

string Batches = ",,H104001002,H104001003,H104001004,H104001005";
string[] parts = Batches.Split(',');
parts[2] = "";
string changed = string.Join(",", parts);

Or you could use a Regex:

string Batches = ",,H104001002,H104001003,H104001004,H104001005";
string changed = Regex.Replace(Batches, @"(?<=\,\,).+?(?=,)", "");

But...I'd suggest that you look at using an existing CSV parser: A Fast CSV Reader[^] is a good choice.

You could try to use regular expressions (or regex). In your case the code will be this:

using System;
using System.Text.RegularExpressions;

public class Example
{
   public static void Main()
   {
      string input = ",,H104001002,H104001003,H104001004,H104001005"
      string pattern = "H104001002";
      string replacement = "";
      Regex rgx = new Regex(pattern);
      string result = rgx.Replace(input, replacement);

      Console.WriteLine("Original String: {0}", input);
      Console.WriteLine("Replacement String: {0}", result);                             
   }
}

// using simple Replace method.
     string Batches = ",,H104001002,H104001003,H104001002,H104001004,H104001005";
     string find = "H104001002";
     Batches = Batches.Replace(find, "");


     // using Array/List to replace it, this will remove the empty items
     List<string> lst = new List<string>();
     var array = Batches.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
     if(array.Contains(find))
         for (int i = 0; i < array.Length; i++)
         {
             if (array[i] != find)
                 lst.Add(array[i]);
         }
     Batches = string.Join(",", lst);

     // using Linq
    Batches= string.Join(",", Batches.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Where(k => k != find).ToArray());