how to properly use the Split property

Question

3.00/5 (2 votes)

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Am am trying to display the user selected item in a messagebox.

The following command works find.

MessageBox.Show(listBox1.SelectedItem.ToString());

I would like to suppress part of the Selected Item after a blank space by using the Split Command like this:

C#

string test=listBox1.SelectedItem.ToString().Split(' ');
  MessageBox.Show(test[0]);

When attempting to compile this I get the following error message:

Error 1 Cannot implicitly convert type 'string[]' to 'string' C:\WindowsFormsApplication6\WindowsFormsApplication6\Form1.cs 41 25 WindowsFormsApplication6

Is there another property or method I should be using to do this?

Posted 19-Feb-13 10:02am

stevenandler

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Comments

Richard C Bishop 19-Feb-13 16:07pm

Your variable "test" is a string and you are using it like an array in the message box. Just do this: MessageBox.Show(test);

5 solutions

Solution 1

Split returns an array which you are trying to set into string test. You almost have it. Combine your two lines of code and do this:

C#

string test=listBox1.SelectedItem.ToString().Split(' ')[0];

This will return the first item in the array as a string.

Posted 19-Feb-13 10:07am

ZurdoDev

Solution 2

Hi,
Split function always return array of string. So use:

C#

string[] test=listBox1.SelectedItem.ToString().Split(' ');

I hope this will help.
Thanks :)

Posted 19-Feb-13 10:08am

Sk. Tajbir

Solution 5

string test=listBox1.SelectedItem.ToString().Split(' ')[0];

Works Great!

Thank you very much!

Posted 19-Feb-13 10:19am

stevenandler

Solution 3

hello,

try

string[] test=listBox1.SelectedItem.ToString().Split(' ');

the Split() method returns an array so your variable needs to be an array.

see here: http://msdn.microsoft.com/en-gb/library/system.string.split.aspx[^]

Valery.

Posted 19-Feb-13 10:10am

Valery Possoz

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Sergey Alexandrovich Kryukov · Accepted Answer · 2013-02-19T10:12:00

C#

string[] test = myListBox.SelectedItem.ToString().Split(new char[] {' '});
if (test.Length > 0)
   MessageBox.Show(test[0]);

or, in some cases,

C#

string[] test = myListBox.SelectedItem.ToString().Split(new char[] {' '}, System.StringSplitOptions.RemoveEmptyEntries);
if (test.Length > 0)
   MessageBox.Show(test[0]);

By the way, pay attention for violation of the naming conventions in listBox1. Auto code generation by designer simply cannot (and should not) do better, but it's your business to rename all auto-generated names to something semantically sensible; never use auto-generated names as is.

—SA