巧用XML配置校验导入Excel的列数据格式

<?xml version="1.0"?>
<ColumnsSeting xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

  <Columns>
  <Column>
      <ColumnName>custCode</ColumnName>
      <ColumnChinese>客户编码</ColumnChinese>
      <RegContent></RegContent>
      <DataType></DataType>
      
  </Column>
  <Column>
      <ColumnName>custName</ColumnName>
      <ColumnChinese>客户名称</ColumnChinese>
      <RegContent></RegContent>
      <DataType></DataType>
      
  </Column>
  <Column>
      <ColumnName>materialCode</ColumnName>
      <ColumnChinese>物料编码</ColumnChinese>
      <RegContent></RegContent>
      <DataType></DataType>
      
  </Column>
  <Column>
      <ColumnName>materialName</ColumnName>
      <ColumnChinese>物料名称</ColumnChinese>
      <RegContent></RegContent>
      <DataType></DataType>
      
  </Column>
  <Column>
      <ColumnName>num</ColumnName>
      <ColumnChinese>数量</ColumnChinese>
      <RegContent>^(-)?(([1-9]{1}\d*)|([0]{1}))(\.(\d){0,})?$</RegContent>
      <DataType>数字</DataType>
      
  </Column>
  <Column>
      <ColumnName>unit</ColumnName>
      <ColumnChinese>单位</ColumnChinese>
      <RegContent></RegContent>
      <DataType></DataType>
      
  </Column>
  <Column>
      <ColumnName>money</ColumnName>
      <ColumnChinese>金额</ColumnChinese>
      <RegContent>^(-)?(([1-9]{1}\d*)|([0]{1}))(\.(\d){0,})?$</RegContent>
      <DataType>数字</DataType>
      
  </Column>
  </Columns>
</ColumnsSeting>

        /// <summary>
        /// 根据xml字典逐个单元格比较验证DataTable数据格式
        /// </summary>
        /// <param name="dt">Excel表格转化为的DataTable</param>
        /// <param name="xmlpath">列名和列标题、格式化正则、格式类型xml配置文件路径</param>
        public static void CompareColumnFormat(DataTable dt, string xmlpath)
        {
            if (dt == null) return;
            XmlDocument xmldoc = XmlUtility.GetXmlDocument(xmlpath);
            XmlNode root = xmldoc.SelectSingleNode("ColumnsSeting");
            XmlNode subNode = root.SelectSingleNode("Columns");
            XmlNodeList subNodeList = subNode.ChildNodes;
            for (int i = 0; i < subNodeList.Count; i++)
            {
                string colname = XmlUtility.GetElement(subNodeList[i], "ColumnName");
                string colchinese = XmlUtility.GetElement(subNodeList[i], "ColumnChinese");
                string regcontent = XmlUtility.GetElement(subNodeList[i], "RegContent");
                string coldatatype = XmlUtility.GetElement(subNodeList[i], "DataType");

                for (int j = 0; j < dt.Rows.Count; j++)
                {
                    if (dt.Columns[i].ColumnName.Equals(colname))
                    {
                        string curval = Convert.ToString(dt.Rows[j][i]);
                        Regex reg = new Regex(regcontent);
                        if (!reg.IsMatch(curval))
                        {
                            throw new Exception(string.Format("当前表格中【{0}】的第【{1}】行数据【{2}】的格式不正确，应为【{3}】，
请修正后继续。",
                                colchinese,
                                j + 1, curval, coldatatype));
                        }
                    }
                }
            }
        }