Question

我尝试从xml配置中获取一些特定值。见下面的例子。

<?xml version="1.0" encoding="utf-8"?>
<ExcelConfig>
    <ExcelDocument name="Customer" type="flat">
        <IdentityColumn>
            <Column name="Id" />
        </IdentityColumn>
        <Validate>
            <Column name="Name" mandatory="true" />
            <Column name="FirstName" mandatory="true" />
            <OrColumns mandatory="true">
                <Column name="PostalCode" mandatory="false" />
                <Column name="PostalCode2" mandatory="false" />
            </OrColumns>
        </Validate>
    </ExcelDocument>
    <ExcelDocument name="Company" type="flat">
        <IdentityColumn>
            <Column name="Id" />
        </IdentityColumn>
        <Validate>
            <Column name="Name" mandatory="true" />
            <Column name="FirstName" mandatory="true" />
            <OrColumns mandatory="true">
                <Column name="PostalCode" mandatory="false" />
                <Column name="PostalCode2" mandatory="false" />
            </OrColumns>
        </Validate>
    </ExcelDocument>
    <ExcelDocument name="SomeOtherType" type="block">
        <IdentityBlock>
            <Column name="Period" col="A" />
            <Column name="Period2" col="B" />
        </IdentityBlock>
        <Validate>
            <Column name="Name" mandatory="true" />
            <Column name="FirstName" mandatory="true" />
        </Validate>
    </ExcelDocument>
</ExcelConfig>

我使用以下代码从excel文件中获取一些信息。 “ValidationConfiguration”是具有先前配置的字符串。

            //Get Different NodeTypes of Excel documents
            List<XPathNavigator> types = XmlHelper.GetNodeTypes(validationConfiguration, "/ExcelConfig/ExcelDocument");
            List<XPathNavigator> flatTypes = XmlHelper.GetNodeTypes(validationConfiguration,
                                                                     "//ExcelConfig/ExcelDocument[@type='flat']");
            List<XPathNavigator> blockTypes = XmlHelper.GetNodeTypes(validationConfiguration,
                                                                     "//ExcelConfig/ExcelDocument[@type='block']");


            //First we check if the file is from the flat type and get the IdentityColumns
            List<XPathNavigator> identityColumnsNode = XmlHelper.GetNodeTypes(validationConfiguration, "//ExcelConfig/ExcelDocument[@type='flat']/IdentityColumn");

您可以在下面找到XmlHelper类。

 public static class XmlHelper
    {
        public static List<XPathNavigator> GetNodeTypes(string xmlConfiguration,string xPath)
        {
            XPathDocument doc = new XPathDocument(new StringReader(xmlConfiguration));
            XPathNavigator nav = doc.CreateNavigator();

            XPathExpression expr = nav.Compile(xPath);
            List<XPathNavigator> elements = new List<XPathNavigator>();

            foreach (XPathNavigator node in nav.Select(expr))
            {
                elements.Add(node);   
            }

            return elements;
        }

        public static List<string> GetIdentityColumnNames(List<XPathNavigator> xPathNavigators)
        {
            List<string> identityColumns = new List<string>();

            foreach (XPathNavigator xPathNavigator in xPathNavigators)
            {
                foreach (XPathNavigator test in xPathNavigator.Select("//Column"))
                {
                    identityColumns.Add(test.GetAttribute("name", ""));
                }
            }

            return identityColumns;
        }
    }

现在我想做以下事情。我选择了identityColumnsNodes（它们包含来自具有平面类型的exceldocuments的IdentityColumn）。我得到了al的类型colums。但是当我尝试这个时，我从整个文件中获取所有列。他不仅使用我使用的节点中的项目。

 foreach (XPathNavigator identityColumNode in identityColumnsNode)
                        {
                            List<string> identityColumns = XmlHelper.GetIdentityColumnNames(identityColumnsNode);          
                        }

我想做的第二个问题/事情 - ＆gt;从特定文件中选择正确验证节点的最佳方法。使用identityColumns（我回来了，我的HeaderRow Cells列表我知道它是什么文件。但是我如何选择那个验证节点？

或者他们是更好的方法来做这些事情？

带有xpath的XPathNavigator会返回错误的节点

0 个答案: