问题可能是不同的目标平台:默认情况下sgen
使用“任何 CPU”(MSIL),如果包含要反序列化或序列化的类型的程序集是为 x86 或 x64 编译的,它不会加载.XmlSerializers.dll
更一般地说,我查看了加载序列化程序集的 .NET 代码 - 这是一些重现与单元测试相同行为的代码:
/// <summary>Generates an identifier for the assembly of a specified type</summary>
/// <remarks>Code copied from the .NET serialization classes - to emulate the same bahavior</remarks>
/// <param name="type">The type</param>
/// <returns>String identifying the type's assembly</returns>
static string GenerateAssemblyId(Type type)
{
Module[] modules = type.Assembly.GetModules();
ArrayList list = new ArrayList();
for (int i = 0; i < modules.Length; i++) {
list.Add(modules[i].ModuleVersionId.ToString());
}
list.Sort();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < list.Count; i++) {
sb.Append(list[i].ToString());
sb.Append(",");
}
return sb.ToString();
} // GenerateAssemblyId
/// <summary>Verifies that the serialization assembly for the specified type can be loaded</summary>
/// <remarks>Code copied from the .NET serialization classes - to emulate the same behavior and tests</remarks>
/// <param name="type">The type</param>
static void AssertCanLoadXmlSerializers(Type type)
{
if (type == null)
throw new ArgumentNullException("type");
Assembly serializerAssembly = null;
// Create the name of the XML serilizers assembly from the type's one
AssemblyName name = type.Assembly.GetName(true);
name.Name = name.Name + ".XmlSerializers";
name.CodeBase = null;
name.CultureInfo = CultureInfo.InvariantCulture;
try {
serializerAssembly = Assembly.Load(name);
} catch (Exception e) {
Assert.Fail("Unable to load XML serialization assembly for type '{0}': {1}", type.FullName, e.Message);
}
object[] attrs = serializerAssembly.GetCustomAttributes(typeof(XmlSerializerVersionAttribute), false);
if (attrs == null || attrs.Length == 0) {
Assert.Fail(
"Unable to use XML serialization assembly '{1}' for type '{0}': it does not contain XmlSerializerVersionAttribute",
type.FullName,
serializerAssembly.FullName
);
}
if (attrs.Length > 1) {
Assert.Fail(
"Unable to use XML serialization assembly '{1}' for type '{0}': it contains multiple XmlSerializerVersionAttribute",
type.FullName,
serializerAssembly.FullName
);
}
XmlSerializerVersionAttribute assemblyInfo = (XmlSerializerVersionAttribute)attrs[0];
string assemblyId = GenerateAssemblyId(type);
if (assemblyInfo.ParentAssemblyId != assemblyId) {
Assert.Fail(
"Unable to use XML serialization assembly '{1}' for type '{0}': it does not match assembly id '{2}'",
type.FullName,
serializerAssembly.FullName,
assemblyId
);
}
} // AssertCanLoadXmlSerializers
只需调用AssertCanLoadXmlSerializers()
传递类型而不是需要序列化/反序列化。如果未加载序列化程序集,您可以从错误消息中很好地了解原因。
我将它添加到我们的单元测试中,以便我可以合理地确定序列化程序集是好的。