how to check if item is selected from a comboBox in C

Question

I m pretty new here   I have a form  and want to check if the user filled it in correctly   In the form there s a combo box  how can I build the  if  statement for checking whether the user picked an item  from it    P S  Sorry for my bad English  it s not my mother tongue

User · Answer

You seem to be using Windows Forms  Look at the SelectedIndex or SelectedItem properties   if  this combo1 SelectedItem    MY OBJECT           do stuff

User · Answer

Use    if comboBox SelectedIndex  gt  -1    somthing was selected   To get the selected item you do   Item m   comboBox Items comboBox SelectedIndex     As Matthew correctly states  to get the selected item you could also do  Item m   comboBox SelectedItem

User · Answer

I ve found that using this null comparison works well  if  Combobox SelectedItem    null        Do something   else    MessageBox show  quot Please select a item quot       This will only accept the selected item and no other value which may have been entered manually by the user which could cause validation issues

User · Answer

Here is the perfect coding which checks whether the Combo Box Item is Selected or not  if  string IsNullOrEmpty comboBox1 Text         MessageBox Show  No Item is Selected       else       MessageBox Show  Item Selected is     comboBox1 Text

User · Answer

if  combo1 SelectedIndex  gt  -1           do something     if any item is selected selected index will be greater than -1

User · Answer

if  comboBox1 SelectedIndex    -1          Done     It Works   Try it

User · Answer

You can try  if combo1 Text

[c#] how to check if item is selected from a comboBox in C#

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