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PMExtra
2020-04-01 15:30:24 +08:00
parent f7f00f4e06
commit aafd4ea658
2 changed files with 2 additions and 2 deletions
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Source/MQTTnet/Extensions/UserPropertyExtension.cs
+1 -1
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@@ -7,7 +7,7 @@ namespace MQTTnet.Extensions
{
public static string GetUserProperty(this MqttApplicationMessage message, string propertyName, StringComparison comparisonType = StringComparison.OrdinalIgnoreCase)
{
return message.UserProperties.SingleOrDefault(up => up.Name.Equals(propertyName, comparisonType))?.Value;
return message?.UserProperties?.SingleOrDefault(up => up.Name.Equals(propertyName, comparisonType))?.Value;
}
public static T GetUserProperty<T>(this MqttApplicationMessage message, string propertyName, StringComparison comparisonType = StringComparison.OrdinalIgnoreCase)