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How to Resolve the '{' was not expected.} Deserializing Twitter XML' Error?

Patricia Arquette
Patricia ArquetteOriginal
2025-01-14 18:36:43548browse

How to Resolve the was not expected.} Deserializing Twitter XML" Error? " />

When you encounter the error message "{" was not expected.} Deserializing Twitter XML", it means that an unexpected element or attribute in the XML document was encountered during XML deserialization. Specifically, the problem seems to be The root element lacks an explicit namespace declaration

.

To solve this problem, there are usually two methods:

Method 1: Add explicit namespace declaration

Add the XmlRoot attribute in the User class to specify the expected namespace of the XML document. This can be achieved by using the [XmlRoot] attribute on the class (compile time) or using the XmlRootAttribute class (runtime).

<code class="language-csharp">[XmlRoot(ElementName = "user", Namespace = "http://twitter.com/users")]
public partial class User
{
    // ...其他属性
}</code>

Method 2: Specify the namespace at runtime

When creating an XmlSerializer instance, use the XmlRootAttribute class to specify the root element and its namespace.

<code class="language-csharp">XmlRootAttribute xRoot = new XmlRootAttribute();
xRoot.ElementName = "user";
xRoot.Namespace = "http://twitter.com/users";

XmlSerializer xs = new XmlSerializer(typeof(User), xRoot);</code>

By specifying the expected namespace, the deserializer is able to correctly interpret the XML document and deserialize the User object accordingly.

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