For C# Window Form, there is a tool called DataGridView.
If we use that to display data, it shows an extra line.
If we have 3 rows of data, it shows 4 rows.
Do it like this:
myDataGridView1.AllowUserToAddRows = false
In the DataGridView properties (small arrow at the top right corner of the control) uncheck Enable Adding, or in the Properties window at the right side of the screen set AllowUserToAddRows to False.
From your Project [Design] view click on the DataGridView1 and from the (Properties) set it like this:
-Or-
Use this code:
DataGridView1.Rows.RemoveAt(DataGridView1.CurrentCell.RowIndex);