تم العثور على أكثر من IStreamUpgradeProviderElement واحد في BindingParameters من BindingContext. وسبب ذلك عادة هو وجود عدة IStreamUpgradeProviderElements في CustomBinding. قم بإزالة كافة هذه العناصر ما عدا واحد.

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Unlocalized message

More than one IStreamUpgradeProviderElement was found in the BindingParameters of the BindingContext. This usually is caused by having multiple IStreamUpgradeProviderElements in a CustomBinding. Remove all but one of these elements.

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