请教论坛里的各位的大神一个问题。我在C#环境下想将dategridview表里面的数据与指定的字符相比判断。
以下是我的代码
 for (int j = 0; j < GridView1.Rows.Count; j++)
            {
               
                #region 门左移
                    if (GridView1.Rows[j].Cells[1].Value.ToString() == "门左移") //门左面移动           
                    {
                        if (GridView1.Rows[j].Cells[1].Value.ToString() == "1") //信号为1            
                        {
                            MessageBox.Show("finished2");
                        }

                        else
                            if (GridView1.Rows[j].Cells[1].Value.ToString() == "0") //信号为0           
                            {

                            }
                    }
              #endregion
但是系统一直跳出未将对象引用设置到对象的实例。不知道怎么处理。

先判断datagridview里面有没有值

我是跟数据库相连。上面显示有数据的。

if (GridView1.Rows[j].Cells[1].Value.ToString() == "门左移") //门左面移动           
                    {
                        if (GridView1.Rows[j].Cells[1].Value.ToString() == "1") //信号为1            
                        {
                            MessageBox.Show("finished2");
                        }

                        else
                            if (GridView1.Rows[j].Cells[1].Value.ToString() == "0") //信号为0           
                            {

                            }
                    }
这什么逻辑??GridView1.Rows[j].Cells[1].Value.ToString() == "门左移" 还会  == "1" 还会 == "0"真荒谬!!

GridView1.Rows[j].Cells[1].Value.ToString()应该是 :GridView1.Rows[j].Cells[0].Value.ToString()

发错了
 #region 门左移
           if (Convert.ToString(GridView1.Rows[j].Cells[1].Value) == "门左移") //门左面移动           
                    {
                        if (Convert.ToString(GridView1.Rows[j].Cells[2].Value) == "1") //信号为1            
                        {
                            MessageBox.Show("finished2");
                        }

                        else
                        if (Convert.ToString(GridView1.Rows[j].Cells[2].Value) == "0") //信号为0           
                        {

                        }
                    }
                现在运行时没有错误。但是它内容读不出来。

[ 本帖最后由 xzhsues 于 2013-1-11 14:06 编辑 ]