![winforms - Unable to save combobox selected index in database in C# windows application - Stack Overflow winforms - Unable to save combobox selected index in database in C# windows application - Stack Overflow](https://i.stack.imgur.com/dPC8s.png)
winforms - Unable to save combobox selected index in database in C# windows application - Stack Overflow
![Solved: Getting an error when setting the SelectedIndex of a ComboBox to anything other than -1? | Experts Exchange Solved: Getting an error when setting the SelectedIndex of a ComboBox to anything other than -1? | Experts Exchange](https://filedb.experts-exchange.com/incoming/2014/05_w20/850147/Screen-Shot.png)
Solved: Getting an error when setting the SelectedIndex of a ComboBox to anything other than -1? | Experts Exchange
![InvalidArgument=Value of '3' is not valid for 'SelectedIndex'" when trying to change 'source' error level from 'Detail' InvalidArgument=Value of '3' is not valid for 'SelectedIndex'" when trying to change 'source' error level from 'Detail'](https://www.ibm.com/support/pages/system/files/support/swg/cogtech.nsf/0/28d9899d8cb03bdb8525811e004577cb/Symptom/0.84.gif)
InvalidArgument=Value of '3' is not valid for 'SelectedIndex'" when trying to change 'source' error level from 'Detail'
![net - silly problem with combobox SelectedIndex and selectedValue in c# windows application - Stack Overflow net - silly problem with combobox SelectedIndex and selectedValue in c# windows application - Stack Overflow](https://i.stack.imgur.com/32KnT.jpg)
net - silly problem with combobox SelectedIndex and selectedValue in c# windows application - Stack Overflow
![net - silly problem with combobox SelectedIndex and selectedValue in c# windows application - Stack Overflow net - silly problem with combobox SelectedIndex and selectedValue in c# windows application - Stack Overflow](https://i.stack.imgur.com/R2QNf.jpg)