指定行改变颜色,

Question

 DataGridViewCellStyle style = new DataGridViewCellStyle();
                                                     foreach ( DataGridViewRow aRow in dataGridView3.Rows)
                            {
                                if (aRow.Cells["message"].Value.ToString() == "不存数据")(未将对象引用设置到对象的实例)
                                {
                                    aRow.DefaultCellStyle.ForeColor = Color.Red;                                }
                            } 
上面提示,使用NEW关键字创建实例,该怎么样修改,谢谢

Answer 1

           if(!string.IsNullOrEmpty(aRow.Cells["message"].Value))

Answer 2

aRow.Cells["message"]
有没有这么一列。

Answer 3

回楼上,有的改成cells[2]也出错,但是第三列,有些数据是NULL的.

Answer 4

if (aRow.Cells["message"] != null)
    if (aRow.Cells["message"].Value != null)
        if (aRow.Cells["message"].Value.ToString() == "不存数据")
            aRow.DefaultCellStyle.ForeColor = Color.Red;