private static Type GetProviderDesignTimeServices(string provider, bool throwOnError)
{
Assembly providerAssembly;
try
{
providerAssembly = Assembly.Load(new AssemblyName(provider));
}
catch (Exception ex)
{
if (!throwOnError)
{
return(null);
}
throw new OperationException(CommandsStrings.CannotFindRuntimeProviderAssembly(provider), ex);
}
var providerServicesAttribute = providerAssembly.GetCustomAttribute <DesignTimeProviderServicesAttribute>();
if (providerServicesAttribute == null)
{
if (!throwOnError)
{
return(null);
}
throw new InvalidOperationException(
CommandsStrings.CannotFindDesignTimeProviderAssemblyAttribute(
nameof(DesignTimeProviderServicesAttribute),
provider));
}
try
{
return(Type.GetType(
providerServicesAttribute.FullyQualifiedTypeName,
throwOnError: true,
ignoreCase: false));
}
catch (Exception ex)
when(ex is FileNotFoundException || ex is FileLoadException || ex is BadImageFormatException)
{
if (!throwOnError)
{
return(null);
}
throw new OperationException(
CommandsStrings.CannotFindDesignTimeProviderAssembly(providerServicesAttribute.PackageName), ex);
}
}
private static IDesignTimeMetadataProviderFactory GetProviderDesignTimeServicesBuilder(string provider)
{
Assembly providerAssembly;
try
{
providerAssembly = Assembly.Load(new AssemblyName(provider));
}
catch (Exception ex)
{
throw new OperationException(CommandsStrings.CannotFindRuntimeProviderAssembly(provider), ex);
}
var providerServicesAttribute = providerAssembly.GetCustomAttribute <DesignTimeProviderServicesAttribute>();
if (providerServicesAttribute == null)
{
throw new InvalidOperationException(
CommandsStrings.CannotFindDesignTimeProviderAssemblyAttribute(
nameof(DesignTimeProviderServicesAttribute),
provider));
}
var providerServicesAssemblyName = providerServicesAttribute.AssemblyName;
Assembly providerServicesAssembly;
if (providerServicesAssemblyName != null)
{
try
{
providerServicesAssembly = Assembly.Load(new AssemblyName(providerServicesAssemblyName));
}
catch (Exception ex)
{
throw new OperationException(
CommandsStrings.CannotFindDesignTimeProviderAssembly(providerServicesAssemblyName), ex);
}
}
else
{
providerServicesAssembly = providerAssembly;
}
var providerServicesType = providerServicesAssembly.GetType(
providerServicesAttribute.TypeName,
throwOnError: true,
ignoreCase: false);
return((IDesignTimeMetadataProviderFactory)Activator.CreateInstance(providerServicesType));
}