Get Date from a datetimepicer in c#

datetime dt;

ReIndex Serial Number in Datagridview C# | Elvisjino

ReIndex Serial Number in Datagridview C# 
private void reIndexSerialNo()

{
int rowCount = dataGridView1.Rows.Count;

for (int i = 0; i < rowCount; i++)
{
dataGridView1.Rows[i].Cells[0].Value = i + 1;
if (i + 1 == rowCount)
{
dataGridView1.Rows[i].Cells[0].Value = i + 1;// "";
}
}
}