private void xsyGridView1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar.ToString() == "\r")
            {
                if (xsyGridView1.Rows.Count > 0)
                {
                    string ss = xsyGridView1.SelectedRows[0].Cells["a"].Value.ToString();
                  
                }
                else
                {
                    int  fdsa = xsyGridView1.Rows.Count;
                    MessageBox.Show(fdsa.ToString());
                }
            
            }
        }

老是提示:索引超出范围.必须为非负值并小于集合大小.Rows.Count=8有数据也有a这一列.求高手帮忙~!