this is what I get with Fiddler with jpg image: (in file manager, host or admin)
Content-Disposition: form-data; name="__dnnVariable"
{"__scdoff":"1","__dnn_postBack":"dnn.xmlhttp.doCallBack('FileManager dnn_ctr362_FileManager',\"[DATA]\",success,this,error,null,null,null,0);","__dnn_pageload":"initFileManager();","UCPrefixID":"dnn_ctr362_FileManager_","UCPrefixName":"dnn$ctr362$FileManager$","DisabledButtons":"0","IsRefresh":"1","MoveStatus":"","DestPath":"0\\","LastPath":"0","MoveFiles":"","dnn_ctr362_FileManager_DNNTree_json":"{ id:\"dnn_ctr362_FileManager_DNNTree\",nodes:[{ txt:\"Site Root\", key:\"0\\\\\", tTip:\"Site Root\", imgIdx:\"0\", css:\"FileManagerTreeNode\", id:\"dnn_ctr362_FileManager_DNNTree_28200424\", hasNodes:\"1\", selected:\"1\",nodes:[]}]}","dnn_ctr362_
dnnTitle_titleLabel_p":"","dnn_ctr362_FileManager_DNNTree_p":"","dnn_ctr362_FileManager_DNNTree:selected":"dnn_ctr362_FileManager_DNNTree_28200424"}
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If the file is text type like css, this is what I get:
Content-Disposition: form-data; name="__dnnVariable"
{"__scdoff":"1","__dnn_postBack":"dnn.xmlhttp.doCallBack('FileManager dnn_ctr362_FileManager',\"[DATA]\",success,this,error,null,null,null,0);","__dnn_pageload":"initFileManager();","UCPrefixID":"dnn_ctr362_FileManager_","UCPrefixName":"dnn$ctr362$FileManager$","DisabledButtons":"0","IsRefresh":"1","MoveStatus":"","DestPath":"0\\","LastPath":"0","MoveFiles":"","SearchIconWebUrl":"url(/icons/sigma/GoogleSearch_16X16_Standard.png)","SearchIconSiteUrl":"url(/icons/sigma/DnnSearch_16X16_Standard.png)","SearchIconSelected":"S","dnn_ctr362_FileManager_DNNTree_json":"{ id:\"dnn_ctr362_FileManager_DNNTree\",nodes:[{ txt:\"Site Root\", key:\"0\\\\\", tTip:\"Site Root\", imgIdx:\"0\", css:\"FileManagerTreeNode\", id:\"dnn_ctr362_FileManager_DNNTree_42745527\", hasNodes:\"1\", selected:\"1\",nodes:[]}]}","dnn_ctr362_
dnnTitle_titleLabel_p":"{callback:'dnn.xmlhttp.doCallBack(\\'titleLabel dnn_ctr362_dnnTitle_titleLabel\\',\\'[TEXT]\\',this.callBackSuccess,this,this.callBackFail,this.callBackStatus,null,null,0);',cssOver:'LabelEditOverClass',cssEdit:'LabelEditTextClass',eventName:'none',tbId:'tbEIPTitle',blursave:'0',nsPrefix:'dnn$ctr362$dnnTitle'}","dnn_ctr362_
FileManager_DNNTree_p":"{callback:'dnn.xmlhttp.doCallBack(\\'DNNTree dnn_ctr362_FileManager_DNNTree\\',\\'[NODEXML]\\',this.callBackSuccess,tNode,this.callBackFail,this.callBackStatus,null,null,0);',css:'FileManagerTreeNode',imagelist:'/icons/sigma/Folder_16X16_Standard.png,/icons/sigma/SecurityRoles_16X16_Standard.png,/icons/sigma/Sql_16X16_Standard.png,/icons/sigma/File_16X16_Standard.png',csschild:'FileManagerTreeNode',expimg:'/icons/sigma/Min_12X12_Standard.png',js:'nodeSelected();',colimg:'/icons/sigma/Max_12X12_Standard.png',cbm:'0',postback:'__doPostBack(\\'dnn$ctr362$FileManager$DNNTree\\',\\'[NODEID]~|~Click\\')',sysimgpath:'/images/',csssel:'FileManagerTreeNodeSelected'}","dnn_ctr362_FileManager_DNNTree:selected":"dnn_ctr362_FileManager_DNNTree_42745527"}
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