Datagridview shall disappear when clicking on the Form in the background

Question

As described in the title, I have a Form with a Datagridview on the front. The datagridview is smaller than my form in the back and I want the Datagridview to disappear when

Answer 1

Change the event handler assigning to:

this.dataGridView1.Leave += new System.EventHandler(fokussiert);

Worked for me when focusing on a textbox