Editing an item in a list T

Question

How do I edit an item in the list in the code below   List lt Class1 gt  list   new List lt Class1 gt      int count   0   index   -1  foreach  Class1 s in list        if  s Number    textBox6 Text          index   count     I found a match and I want to edit the item at this index     count       list RemoveAt index   list Insert index  new Class1

User · Answer

public changeAttr int id        list Find p   gt  p IdItem    id  FieldToModify   newValueForTheFIeld      With    IdItem is the id of the element you want to modify FieldToModify is the Field of the item that you want to update  NewValueForTheField is exactly that  the new value     It works perfect for me  tested and implemented

User · Answer

You can use the FindIndex   method to find the index of item  Create a new list item  Override indexed item with the new item      List lt Class1 gt  list   new List lt Class1 gt      int index   list FindIndex item   gt  item Number    textBox6 Text    Class1 newItem   new Class1    newItem Prob1    SomeValue    list index    newItem

User · Answer

class1 item   lst index   item foo   bar

User · Answer

You don t need to use linq since List lt T gt  provides the methods to do this   int index   lst FindLastIndex c   gt  c Number    textBox6 Text   if index    -1        lst index    new Class1

User · Answer

After adding an item to a list  you can replace it by writing  list someIndex    new MyClass      You can modify an existing item in the list by writing  list someIndex  SomeProperty   someValue    EDIT   You can write  var index   list FindIndex c   gt  c Number    someTextBox Text   list index    new SomeClass

[c#] Editing an item in a list<T>

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