Repeating a List Using ForEach

Question

I have a list like this

Dim emailList as new List(Of String) emailList.Add(" [e-mail] ") emailList.Add(" [e-mail] ") emaillist.Add(" [e-mail] ") 

How can I iterate over a list using ForEach to get a single line with such emails

 [e-mail] ; [e-mail] ; [e-mail] 

Answer 1

I'm not sure why you want to use foreach instead of String.Join expression. You can simply String.Join () the list, using a comma as a colon.

 String.Join(";", emailList.ToArray()) 

Answer 2

You may try

 Dim stringValue As String = String.Join(";", emailList.ToArray) 

Take a look at the String.Join Method

Answer 3

I would not use the ForEach loop for this. Here is what I will do:

 String.Join(";", emailList.ToArray()); 

Answer 4

  Dim emailList As New List(Of String) emailList.Add(" [e-mail] ") emailList.Add(" [e-mail] ") emailList.Add(" [e-mail] ") Dim output As StringBuilder = New StringBuilder For Each Email As String In emailList output.Append(IIf(String.IsNullOrEmpty(output.ToString), "", ";") & Email) Next 

Answer 5

 Dim emailList As New StringBuilder() For Each (email As String In emails) emailList.Append(String.Format("{0};", email)) Next Return emailList.ToString() 

Forgive me if there are any syntax errors ... my VB.NET is a little rusty and I don't have a handy helper.