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.Net 非常新。一切正常，直到我添加<Tracking>到我的 XML 文件中：

<Product>
    <id>product1</id>
    <Name>Product 1</Name>
    <Packart>detailimg</Packart>
    <TitleFile>detailtitleoriginal</TitleFile>
    <Description>Description</Description>
    <Ingredients>Ingredients</Ingredients>
    <FeedingInstructions>Instructions</FeedingInstructions>
    <Analysis>Analysis</Analysis>
    <Footer>Footer</Footer>
    **<Tracking>Test</Tracking>**
</Product>

我的 XSD 文件是这样的：

<?xml version="1.0" encoding="utf-8" ?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:element name="Products">
        <xs:complexType>
            <xs:sequence>
                <xs:element maxOccurs="unbounded" name="Product">
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element name="id" type="xs:string" />
                            <xs:element name="Name" type="xs:string" />
                            <xs:element name="Packart" type="xs:string" />
                            <xs:element name="TitleFile" type="xs:string" />
                            <xs:element name="Description" type="xs:string" />
                            <xs:element name="Ingredients" type="xs:string" />
                            <xs:element name="FeedingInstructions" type="xs:string" />
                            <xs:element name="Analysis" type="xs:string" />
                            <xs:element name="Footer" type="xs:string" />
                            <xs:element name="Tracking" type="xs:string" /></xs:sequence>
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>

然后在我的 aspx 页面中我添加了：

<%=row[ "Tracking"]%>

当我在浏览器中查看页面时，出现错误：

Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Data.ConstraintException: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.

Source Error: 


Line 19:             ds = new System.Data.DataSet();
Line 20:             ds.ReadXmlSchema(MapPath("Content/xml/Products.xsd"));
Line 21:             ds.ReadXml(MapPath("Content/xml/Products.xml"));
Line 22:             Cache.Insert("Products", ds, new System.Web.Caching.CacheDependency(MapPath("Content/xml/Products.xml")),
Line 23:                          DateTime.Now.AddHours(12), System.Web.Caching.Cache.NoSlidingExpiration);

Source File: d:\ProductDetails.aspx.cs    Line: 21
4

1 回答 1

1

快速解决此问题的一种方法是禁用数据集上的 EnforceConstraints：

ds.EnforceConstraints = false;
//now you can load the data

更新：显然，这可能会产生不良影响。您应该决定在您的场景中是否是这种情况。

于 2012-05-08T20:12:31.417 回答