strange way to handle click event of button placed in GridView

[M I developer]

I was assigned to do some changes on built page and I found this.....

protected void btnEditClick(object sender, EventArgs e)
{
for (int i = 0; i < gvContactInfo.Rows.Count; i++)
{
var row = gvContactInfo.Rows[i].Cells[8];

            ImageButton button = row.FindControl("modifyLink") as ImageButton;
            
            if (button.GetHashCode() == SenderButton.GetHashCode())
            {
                ContactInfoView contactInfoView = row.FindControl("ctlContactInfoView") as ContactInfoView;
                ctlNewContactInfo.ContactInfo = contactInfoView.ContactInfo;
            }
            
        }
    }