Linq to Sql, how to check if a given table/class is in the changeset of the DataContext -


I am parsing an XML-file using LinqToXSD I insert elements in XML into related tables in a database I'm using Linq to

I 

  DB & Lt; Table & gt; Using several different tables / elements in the datacentext; InertOnSubmit (table);

Where Tables can be around 75 different tables.

The XML is full of duplicates, and I would like to check if the element already given in XML is added to the changes in DataContext.

Is there a normal way of doing this? The way I'm doing this, it is now including writing code for each separate table, so I think I can somehow remove a method in some other way and write this code once.

To parsize the XML I have a method for each element in the XML that matches a table in the database. In the next two ways, each type of XML-Elements is handled.

Private Static tbl_trackname ParseTrackName (TRACKNAMEType tRACKNAMEType) {tbl_trackname tableTrackName = new tbl_trackname (); TableTrackName.code = tRACKNAMEType.code; TableTrackName.text = tRACKNAMEType.text; DB.tbl_tracknames.InsertOnSubmit (tableTrackName); Return tabletrekname; } Private static tbl_track parseractic (track type typewrite) {tbl_track tableTrack = new tbl_track (); TableTrack.trackID = int.Parse (tRACKType.trackid); TableTrack.tbl_organization = ParseOrganisation (tRACKType.organization); TableTrack. Tbl_trackname = ParseTrackName (tRACKType.trackname); TableTrack.tbl_nation = Parsation (tRACKType.country); DB.tbl_tracks.InsertOnSubmit (tableTrack); Return Table Track; }

The first method contains the rows in a table named tbl_trackname, the rows inserted in the second table are named tbl_track.

There is a missing code code which checks if a track, or track name is already entered into the datacentext. I should also check that it is already in the database but it is just a line of code, so I can do this with every purse XXX () method.

OK, you probably can do something with dataContext.GetChangeSet (). Inserts.OfType & lt; Foo & gt; () ? Maybe in any or

Can you give more of an example?


Comments

Post a Comment

Popular posts from this blog

python - Overriding the save method in Django ModelForm -

I'm having trouble overriding a ModelForm save method. I get this error I'm: Exception type: TypeErier Exception Value: Save () found an unexpected keyword argument 'committed' My intentions include a form 3 fields Submit several values ​​for, then create an object for each combination of those areas, and to save each object file models.py class collarsult type (models.Model): id = model. AutoField (db_column = 'icontact_result_code_type_id', primary_key = true) callResult = models.ForeignKey ( 'CallResult', db_column = 'icontact_result_code_id') campaign = models.ForeignKey ( 'campaign', db_column = 'icampaign_id') CALLTYPE = models.ForeignKey ( 'CALLTYPE', db_column = 'icall_type_id') agent = models.BooleanField (db_column = 'bagent', default = true) teamLeader = models.BooleanField (db_column = 'bTeamLeader', default = true) active = models.BooleanField (db_column = Django.form...
Read more

html - CSS autoheight, but fit content to height of div -

I have a div in which there are three children- div in the left and middle div: float: left while true: float: true because it is my layout Actually will spoil, I've used ClearFix Hack: .cf {zoom: 1; }. Cf: First,. Cf: {content: ""; Display: Table; }. Cf: After {clear: both; } It still works, but I want to be the right div an indicator. So it should fill 100% of the parent unit of height. How can I complete this? PS is the full code: & Lt; / Div & gt; & Lt; Div class = "mobile_content" & gt; & Lt; H5 & gt; {{Data.titel}} & lt; / H5> & Lt; Table & gt; & Lt; TR & gt; & Lt; Th & gt; Komponist: & lt; / Th & gt; & Lt; TD & gt; {{Data.komponist}} & lt; / TD & gt; & Lt; / TR & gt; & Lt; TR & gt; & Lt; Th & gt; Instrument: & lt; / Th & gt; & Lt; TD & gt; {{Data.instrumente}} & lt; / TD & gt; & Lt; / TR & gt;...
Read more

qt - How to prevent QAudioInput from automatically boosting the master volume to 100%? -

I have been trying to use Qt5 multimedia to record audio with QAudioInput, however, when I see If QAudioInput is started, it increases the master volume of my sound device to 100%. How can I prevent QAudioInput from changing the master volume? My current development platform is Linux with PalsAdio (with flat audio disabled). How can I use QAudioInput : QAudioDeviceInfo device_info = QAudioDeviceInfo :: defaultInputDevice (); QAudio format format; Format.setSampleRate (44100); Format.setChannelCount (1); Format.setSampleSize (16); Format.setCodec ("Audio / PCM"); Format.setSampleType (QAudioFormat :: SignedInt); Format.setByteOrder (QAudioFormat :: LittleEndian); Std :: cout & lt; & Lt; Device_info.deviceName (). ToUtf8 (). ConstData () & lt; & Lt; Std :: endl; QAudioInput * default_device = new QAudioInput (device_info, format); QIODevice * default_io_device = default_device-> Start (); a QAudioInput.setVolume () method is not you I ...
Read more