xml文件的内容如下:-----------------------------------------
<?xml version="1.0" standalone="yes"?>
<NewDataSet>
  <eContain>
    <编号>1</编号>
    <eSortName>强化训练</eSortName>
    <pSortName>选择题</pSortName>
    <titNum>1</titNum>
    <titName>数据库选择题题目1</titName>
    <titAnswer>选择题正确答案</titAnswer>
    <A>选项A</A>
    <B>选项B</B>
    <C>选项C</C>
    <D>选项D</D>
    <titExplain>选择题解析</titExplain>
  </eContain>
  <eContain>
    <编号>2</编号>
    <eSortName>强化训练</eSortName>
    <pSortName>选择题</pSortName>
    <titNum>2</titNum>
    <titName>数据库选择题题目2</titName>
    <titAnswer>选择题正确答案</titAnswer>
    <A>选项A</A>
    <B>选项B</B>
    <C>选项C</C>
    <D>选项D</D>
    <titExplain>选择题解析</titExplain>
  </eContain>
  <eContain>
    <编号>3</编号>
    <eSortName>强化训练</eSortName>
    <pSortName>选择题</pSortName>
    <titNum>3</titNum>
    <titName>数据库选择题题目3</titName>
    <titAnswer>选择题正确答案</titAnswer>
    <A>选项A</A>
    <B>选项B</B>
    <C>选项C</C>
    <D>选项D</D>
    <titExplain>选择题解析</titExplain>
  </eContain>
  <eContain>
    <编号>9</编号>
    <eSortName>强化训练</eSortName>
    <pSortName>选择题</pSortName>
    <titNum>4</titNum>
    <titName>0000000</titName>
    <titAnswer>1111111</titAnswer>
    <A>222222</A>
    <B>4444444</B>
    <C>5555555</C>
    <D>111111</D>
    <titExplain>545446456</titExplain>
  </eContain>
</NewDataSet>
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我怎么用label让他们按这种格式显示:--------------------
<titNum>.<titName>
        <A>
        <B>
        <C>
        <D>-----------------------------
请教~~~~~~