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Strings stripped of leading whitespace when using MTOM message encoding

Posted By:      Posted Date: September 06, 2010    Points: 0   Category :WCF
Hello, I have a problem which I believe is actually caused by a bug in WCF 4 (.Net 4). I have a WCF service exposes two basicHttpBinding endpoints identical in everything but the message encoding used, one uses "text" and one "mtom" (i.e. the values for the messageEncoding attribute on the binding configuration). If I send a string with leading whitespaces to the "text endpoint" it is delivered to the service application code exactly as sent. If I send the string to the "mtom endpoint" it is stripped of the leading whitespaces before being handed over to the service application code. I have confirmed that the leading whitespaces are included in the message on the wire and using an IDispatchMessageInspector I have also confirmed that the whitespaces are still present after decoding the message (Message.ToString()). The whitespaces seem to disappear between this stage and when the message is deserialized. My current workaround is an IDispatchMessageInspector with the following AfterReceiveRequest method: public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext) { // Doing this roundtrip over MessageBuffer removes the problem // (i.e. leading whitespaces are not removed) request = request.CreateBufferedCopy(int.MaxValue).CreateMessage(); return null; } Am I missing something he

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Inserting personal error message in ValidationSummary



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Setting my custom error to visible = false on button click also does not seem to work as it requires for me to enter the value first.

This made me think, is there a way to insert my custom validation inside the ValidationSummary as an error message like for other validation control?

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UpdatePanel is not a known element - message when upgrading to 1.0 ajax


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replacing ok and cancel button of an alert message with YES an NO button in asp.net web application.


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How to check for null/empty strings on dynamic objects?


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Hi Everyone,

I am running Windows 7 and I have gone into Control Panel and activated all of the IIS Functions.

The web application I am running was downloaded from the net (and has worked on other machines previously).  Once I downloaded it, I moved it into C:/inetpub/wwwroot/code/main.asp

I am a bit of a novice at this!  But I am hoping someone can point me in the right direction!


I get the following error when I try and run the web application through IE:

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Compiler Error Message : CS0006: Metadata file 'System.EnterpriseServices.dll' could not be found


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I followed these steps.,

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I also rebooted my system but no use....

Plz help !

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