I have a problem : I have main windows with bind to sql combo box.
I want to display at the start of second windows selected value from main win combo box in combo box which located in second windows.
I have code that does this but I'm having trouble when I bind combo box from second windows to sql.
More than I have this code that displays the selected value from main windows but everytime first row in sql table because a code is selectedIndwx = 0 ;
How can I change the code to display the selected value from the main window and bind combo box
at the same time.
there is a code.
void button3_Click(object sender,
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