wpf - How to pass reference parameters in a wcf method and listen to the current value of the parameter in a timer? -

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i have wcf method connects tfs server , downloads files based on rootpath remote machine.

so have 17k files , takes 20 minutes download , want progressbar report current status after every for loop present in wcf service. ref parameters don't updated unless entire method completed when passed in wcf method.

is there other way it? want report status of current for loop iteration happening in wcf method progressbar present in local wpf application.


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