从网络上学到几种读取XML文件的方法 后，我通过实践，发现也能不用遍历的方式直接读取到XML节点的数据。

方法如下：

XML文件内容：

<?xml version="1.0" encoding="GB2312"?>
<Main>
  <StartCheckBox>False</StartCheckBox>
  <StaShutCheckBox>False</StaShutCheckBox>
  <ShutDTPickerCH>True</ShutDTPickerCH>
  <ShutDTPicker>14:37:34</ShutDTPicker>
  <RestRDTPicker>00:40:40</RestRDTPicker>
  <SelInTimecomboBox>20</SelInTimecomboBox>
</Main>

XmlDocument doc = new XmlDocument();
doc.Load("MCTMConfig.xml");
XmlNodeList nodelist = doc.SelectSingleNode("Main").ChildNodes;
StartCheckBox.Checked = Convert.ToBoolean(nodelist[0].InnerText);
StaShutCheckBox.Checked = Convert.ToBoolean(nodelist[1].InnerText);
ShutDTPicker.Checked = Convert.ToBoolean(nodelist[2].InnerText);
if (ShutDTPicker.Checked)
{
  ShutDTPicker.Value = Convert.ToDateTime(nodelist[3].InnerText);
}
RestRDTPicker.Value = Convert.ToDateTime(nodelist[4].InnerText);
ShutCBox.Text = Convert.ToString(nodelist[5].InnerText);
doc.RemoveAll();