How to delete last character in a string in C

Question

Building a string for post request in the following way     var itemsToAdd   sl SelProds ToList      if  sl SelProds Count      0            foreach  var item in itemsToAdd                  paramstr   paramstr   string Format  productID  0  amp    item prodID ToString                   after I get resulting paramstr  I need to delete last character  amp  in it  How to delete last character in a string using C

User · Answer

It s good practice to use a StringBuilder when concatenating a lot of strings and you can then use the Remove method to get rid of the final character      StringBuilder paramBuilder   new StringBuilder     foreach  var item in itemsToAdd        paramBuilder AppendFormat   productID  0  amp    item prodID ToString        if  paramBuilder Length  gt  1      paramBuilder Remove paramBuilder Length-1  1    string s   paramBuilder ToString

User · Answer

paramstr Remove  paramstr Length-1  1     This does work to remove a single character from the end of a string  But if I use it to remove  say  4 characters  this doesn t work   paramstr Remove  paramstr Length-4  1     As an alternative  I have used this approach instead   DateFrom   DateFrom Substring 0  DateFrom Length-4

User · Answer

string source     source gets initialized string dest  if  source Length  gt  0        dest   source Substring 0  source Length - 1

User · Answer

string str  This is test string    str str Remove str Length-1

User · Answer

build it with string Join instead   var parameters   sl SelProds Select x  gt  productID   x prodID  ToArray    paramstr   string Join   amp    parameters     string Join takes a seperator    amp    and and array of strings  parameters   and inserts the seperator between each element of the array

User · Answer

Try this   paramstr Remove  paramstr Length-1  1

User · Answer

I would just not add it in the first place    var sb   new StringBuilder      bool first   true   foreach  var foo in items        if  first          first   false      else         sb Append   amp             for example      var escapedValue   System Web HttpUtility UrlEncode foo        sb Append key  Append      Append escapedValue        var s   sb ToString

User · Answer

It s better if you use string Join    class Product       public int ProductID   get  set        static void Main string   args        List lt Product gt  products   new List lt Product gt                        new Product   ProductID   1             new Product   ProductID   2             new Product   ProductID   3               string theURL   string Join   amp    products Select p   gt  string Format  productID  0    p ProductID        Console WriteLine theURL

User · Answer

Personally I would go with Rob s suggestion  but if you want to remove one  or more  specific trailing character s  you can use TrimEnd  E g    paramstr   paramstr TrimEnd   amp

User · Answer

Add a StringBuilder extension method   public static StringBuilder RemoveLast this StringBuilder sb  string value        if sb Length  lt  1  return sb      sb Remove sb ToString   LastIndexOf value   value Length       return sb      then use   yourStringBuilder RemoveLast

[c#] How to delete last character in a string in C#?

Examples related to c#

Examples related to string