Cannot a file to document library with column validation

Question

I have two problems
Problem#1: I can not create a file from C# code, If document library has a text column with Sharepoint column validation.
SharePoint throws exception if I invoke SPFileCollection.Add method.
at Microsoft.SharePoint.SPGlobal.HandleComException(COMException comEx) at Microsoft.SharePoint.Library.SPRequest.PutFile(String bstrUrl, String bstrWebRelativeUrl, Object punkFile, Int32 cbFile, Object punkFFM, PutFileOpt PutFileOpt, String
bstrCreatedBy, String bstrModifiedBy, Int32 iCreatedByID, Int32 iModifiedByID, Object varTimeCreated, Object varTimeLastModified, Object varProperties, String bstrCheckinComment, Byte partitionToCheck, Int64 fragmentIdToCheck, String bstrCsvPartitionsToDelete,
String bstrLockIdMatch, String bstEtagToMatch, Int32 lockType, String lockId, Int32 minutes, Int32 fRefreshLock, Int32 bValidateReqFields, Guid gNewDocId, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage, String& pEtagReturn, Byte& piLevel,
Int32& pbIgnoredReqProps) at Microsoft.SharePoint.SPFileCollection.AddStreamOrBytesInternal(String urlOfFile, Stream file, PutFileOpt fileOpt, String createdBy, String modifiedBy, Int32 createdByID, Int32 modifiedByID, DateTime timeCreated, DateTime timeLastModified,
Object varProperties, String checkInComment, Stream formatMetadata, String lockIdMatch, String etagToMatch, SPLockType lockType, String lockId, TimeSpan lockTimeout, Boolean validateRequiredFields, SPVirusCheckStatus& virusCheckStatus, String& virusCheckMessage,
String& etagNew, Boolean& ignoredRequiredProps) at Microsoft.SharePoint.SPFileCollection.Add(String urlOfFile, Byte[] file, SPFileCollectionAddParameters parameters)
If I remove column validation, I don't get that error.
It would appear that the error is thrown internally in Sharepoint's Add API.
Not quite sure how to proceed now.
Problem#2: Even if I input a valid value in the column validation, the same error above is still thrown.
Confused................
[Update] Okay, I have found the reason for the exception (correct if I am wrong). Sharepoint File has metadata, and when I do the Add function, Sharepoint internally does a validation on the metadata and it will throw exception if not validated. That's why
validation would fail even when I am inputting some valid data in my field (because I am not sending that valid data to the Add function through metadata properties).So, my question now is:
Is it possible to prevent the validation on the metadata properties? Is there some APi for it?

Answer 1

I was probably not clear in my thread.
What I would want is for my code to upload the file to the server and then allow me to input my values for the metadata, THEN do the validation. Similar to how you upload a document to sharepoint library using the out-of-the-box webparts.
But, right now in my code, this is not possible. Uploading the file using the Add API will just throw an error BEFORE even allowing me to input any values for my item/file metadata. So, I am trying to find a way to upload my file without the validation (pretty
much like how microsoft does it in oob)
Not sure if this is clear enough now