dataInfo = new DeviceManage.设备报废(); for (int i = 0; i < dataGridView1.Rows.Count; i++) { if (dataGridView1.Rows[i].Selected == true) { if (isadmin == "1") { if (dataGridView1.Rows[i].Cells[0].Value == null) { dataInfo.sp_no = bfdh.Text = dataGridView1.Rows[i].Cells[2].Value.ToString(); dataInfo.login_no = yhbh.Text = dataGridView1.Rows[i].Cells[3].Value.ToString(); dataInfo.dev_no = sbbh.Text = dataGridView1.Rows[i].Cells[4].Value.ToString(); dataInfo.sp_why = bfyy.Text = dataGridView1.Rows[i].Cells[5].Value.ToString(); dataInfo.remark = bz.Text = dataGridView1.Rows[i].Cells[6].Value.ToString(); }改成foreach

可以改写成 foreach 循环的形式，如下所示：

dataInfo = new DeviceManage.设备报废();
foreach (DataGridViewRow row in dataGridView1.SelectedRows)
{
    if (isadmin == "1" && row.Cells[0].Value == null)
    {
        dataInfo.sp_no = bfdh.Text = row.Cells[2].Value.ToString();
        dataInfo.login_no = yhbh.Text = row.Cells[3].Value.ToString();
        dataInfo.dev_no = sbbh.Text = row.Cells[4].Value.ToString();
        dataInfo.sp_why = bfyy.Text = row.Cells[5].Value.ToString();
        dataInfo.remark = bz.Text = row.Cells[6].Value.ToString();
    }
}

这里使用了 foreach 循环遍历 dataGridView1 中选中的行，对于每一行，判断是否为管理员且第一列数据为 null，如果成立，则将选中行的各列数据赋值给 dataInfo 对象的属性，并同时赋值给界面上的几个文本框。

相关问题

dataInfo = new DeviceManage.设备报废(); for (int i = 0; i < dataGridView1.Rows.Count; i++) { if (dataGridView1.Rows[i].Selected == true) { if (isadmin == "1") { if (dataGridView1.Rows[i].Cells[0].Value == null) { dataInfo.sp_no = bfdh.Text = dataGridView1.Rows[i].Cells[2].Value.ToString(); dataInfo.login_no = yhbh.Text = dataGridView1.Rows[i].Cells[3].Value.ToString(); dataInfo.dev_no = sbbh.Text = dataGridView1.Rows[i].Cells[4].Value.ToString(); dataInfo.sp_why = bfyy.Text = dataGridView1.Rows[i].Cells[5].Value.ToString(); dataInfo.remark = bz.Text = dataGridView1.Rows[i].Cells[6].Value.ToString(); } 改成foreach

将上面的代码改为foreach循环，可以按照如下方式实现：

dataInfo = new DeviceManage.设备报废();             
foreach (DataGridViewRow row in dataGridView1.SelectedRows)
{
    if (isadmin == "1")
    {
        if (row.Cells[0].Value == null)
        {
            dataInfo.sp_no = bfdh.Text = row.Cells[2].Value.ToString();
            dataInfo.login_no = yhbh.Text = row.Cells[3].Value.ToString();
            dataInfo.dev_no = sbbh.Text = row.Cells[4].Value.ToString();
            dataInfo.sp_why = bfyy.Text = row.Cells[5].Value.ToString();
            dataInfo.remark = bz.Text = row.Cells[6].Value.ToString();
        }
    }
}

这样就可以遍历选中的DataGridView行，将每一行的数据存入对应的变量中。

dataInfo = new DeviceManage.设备运行(); for (int i = 0; i < dataGridView1.Rows.Count; i++) { if (dataGridView1.Rows[i].Selected == true) { dataInfo.dev_no = sbbh.Text = dataGridView1.Rows[i].Cells[0].Value.ToString(); dataInfo.date = dateTimePicker1.Text = dataGridView1.Rows[i].Cells[1].Value.ToString(); dataInfo.starttime = dateTimePicker2.Text = dataGridView1.Rows[i].Cells[2].Value.ToString(); dataInfo.endtime = dateTimePicker3.Text = dataGridView1.Rows[i].Cells[3].Value.ToString(); dataInfo.endwhy = tjyy.Text = dataGridView1.Rows[i].Cells[4].Value.ToString(); dataInfo.devstatus = yxzt.Text = dataGridView1.Rows[i].Cells[5].Value.ToString(); dataInfo.remark = bz.Text = dataGridView1.Rows[i].Cells[6].Value.ToString(); } 同义改写

以下是对上述代码的同义改写：

DeviceManage.设备运行 dataInfo = new DeviceManage.设备运行();

for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
    if (dataGridView1.Rows[i].Selected == true)
    {
        sbbh.Text = dataGridView1.Rows[i].Cells[0].Value.ToString();
        dateTimePicker1.Text = dataGridView1.Rows[i].Cells[1].Value.ToString();
        dateTimePicker2.Text = dataGridView1.Rows[i].Cells[2].Value.ToString();
        dateTimePicker3.Text = dataGridView1.Rows[i].Cells[3].Value.ToString();
        tjyy.Text = dataGridView1.Rows[i].Cells[4].Value.ToString();
        yxzt.Text = dataGridView1.Rows[i].Cells[5].Value.ToString();
        bz.Text = dataGridView1.Rows[i].Cells[6].Value.ToString();

        dataInfo.dev_no = sbbh.Text;
        dataInfo.date = dateTimePicker1.Text;
        dataInfo.starttime = dateTimePicker2.Text;
        dataInfo.endtime = dateTimePicker3.Text;
        dataInfo.endwhy = tjyy.Text;
        dataInfo.devstatus = yxzt.Text;
        dataInfo.remark = bz.Text;
    }
}

这个代码段的作用是将选中的行中的数据填充到表单上，并将该行数据保存在 `dataInfo` 对象中。同义改写后的代码与原代码的功能相同，只是稍微重构了一下。