Is it possible to update a record's attribute of picklist type with null by using Sdk.Sync.Update? It's not working for me.
Here's what I do:
var detailsObj = updatedDetailsObj; // I get updatedDetailsObj from previous logic, not shown here
var operation = new Sdk.Entity("kcl_operation");
operation.setId(operationId, false); // I have operationId from previous logic, not shown here
operation.addAttribute(new Sdk.String("op_updatedAccount", detailsObj.UpdatedAccount)); // works, get updated
operation.addAttribute(new Sdk.OptionSet("op_updatedExplanation", null)); // doesn't get updated
Sdk.Sync.update(operation);
After the completion of Sdk.Sync.update, the string field get updated, but the picklist field is left with its previous value, instead of null.
I also took a look inside the XML being sent inside Sdk.Sync.update, and indeed, it lacks the pair of "op_updatedExplanation" and null.
How can make it work?
Added:
I'm not doing it inside a form but inside a grid page, so that the user checks several records and I need to make the update on all of them.
standard CRM SDK code (assuming entity name and field name):
Entity operation = new Entity("kcl_operation");
operation.Id = operationId;
operation["op_updatedexplanation"] = null;
service.Update(operation);
where service is an IOrganizationService instance
Please use this snippet to set value as null.
Xrm.Page.getAttribute("op_updatedexplanation").setValue(null);
This will just set the value in the form. You may have to save the form to see the value getting stored in database.
Xrm.Page.data.entity.save();
If the control is disabled - you have to set the submitmode attribute also.
Xrm.Page.getAttribute("op_updatedexplanation").setSubmitMode("always");
I'm using a Typed DataSet with an Insert statement; I have a table that has a smalldatetime field defined to accept null values. When I insert from a .NET 2.0 FormView, I get a "SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM."
Now, I've read this post, and the parameter as sent to the class constructor is defined as
global::System.Nullable<global::System.DateTime> DoB
So, it looks like it should accept a Nullable obj. Additionally, the generated code is testing the value sent.
if ((DoB.HasValue == true)) {
command.Parameters[6].Value = ((System.DateTime)(DoB.Value));
}
else {
command.Parameters[6].Value = global::System.DBNull.Value;
}
Specifically, the error is occurring when generated SqlClient.SqlCommand.ExecuteScalar() runs:
try {
returnValue = command.ExecuteScalar();
}
So, I guess my question is: how do I use a Typed DataSet to set a blank value (passed from a FormView on CommandName=Insert) to a null in a database?
Ok, so here's what worked for me. First, to reiterate, I've got a Typed DataSet with DataAdapters that's generating the ADO objects. So, on my page, I can create a ObjectDataSource with the type that points to my adapter, and then name the different access methods housed there-in.
No, I have an Insert to a table where basically all the columns are nullable; some varchar, some smalldatetime.
When I submit an empty form, I'd like nulls to be entered. They're not and lots of various errors are thrown. What I ended up doing is subclassing the ObjectDataSource to gain access to the Inserting event. (subclassed for reusability) In the Inserting event, I looped through the InputParameters, and if it was a string and == "", I set it to null. Also, you cannot set ConvertNullToDBNull to true; that causes the strings to fail. This successfully allowed the Nullable to remain null.
I'm attempting to use LINQ to insert a record into a child table and I'm
receiving a "Specified cast is not valid" error that has something to do w/
the keys involved. The stack trace is:
Message: Specified cast is not valid.
Type: System.InvalidCastException
Source: System.Data.Linq TargetSite:
Boolean
TryCreateKeyFromValues(System.Object[],
V ByRef) HelpLink: null Stack: at
System.Data.Linq.IdentityManager.StandardIdentityManager.SingleKeyManager2.TryCreateKeyFromValues(Object[]
values, V& v) at
System.Data.Linq.IdentityManager.StandardIdentityManager.IdentityCache2.Find(Object[]
keyValues) at
System.Data.Linq.IdentityManager.StandardIdentityManager.Find(MetaType
type, Object[] keyValues) at
System.Data.Linq.CommonDataServices.GetCachedObject(MetaType
type, Object[] keyValues) at
System.Data.Linq.ChangeProcessor.GetOtherItem(MetaAssociation
assoc, Object instance) at
System.Data.Linq.ChangeProcessor.BuildEdgeMaps()
at
System.Data.Linq.ChangeProcessor.SubmitChanges(ConflictMode
failureMode) at
System.Data.Linq.DataContext.SubmitChanges(ConflictMode
failureMode) at
System.Data.Linq.DataContext.SubmitChanges()
(.....)
This error is being thrown on the following code:
ResponseDataContext db = new ResponseDataContext(m_ConnectionString);
CodebookVersion codebookVersion = db.CodebookVersions.Single(cv => cv.VersionTag == m_CodebookVersionTag);
ResponseCode rc = new ResponseCode()
{
SurveyQuestionName = "Q11",
Code = 3,
Description = "Yet another code"
};
codebookVersion.ResponseCodes.Add(rc);
db.SubmitChanges(); //exception gets thrown here
The tables in question have a FK relationship between the two of them.
The parent table's column is called 'id', is the PK, and is of type: INT NOT NULL IDENTITY
The child table's column is called 'responseCodeTableId' and is of type: INT NOT NULL.
codebookVersion (parent class) maps to table tblResponseCodeTable
responseCode (childClass) maps to table tblResponseCode
If I execute SQL directly, it works. e.g.
INSERT INTO tblResponseCode
(responseCodeTableId, surveyQuestionName, code, description)
VALUES (13683, 'Q11', 3, 'Yet another code')
Updates to the same class work properly. e.g.
codebookVersion.ResponseCodes[0].Description = "BlahBlahBlah";
db.SubmitChanges(); //no exception - change is committed to db
I've examined the variable, rc, after the .Add() operation and it does, indeed, receive the proper responseCodeTableId, just as I would expect since I'm adding it to that collection.
tblResponseCodeTable's full definition:
COLUMN_NAME TYPE_NAME
id int identity
responseCodeTableId int
surveyQuestionName nvarchar
code smallint
description nvarchar
dtCreate smalldatetime
dtCreate has a default value of GetDate().
The only other bit of useful information that I can think of is that no SQL
is ever tried against the database, so LINQ is blowing up before it ever
tries (hence the error not being a SqlException). I've profiled and verified
that no attempt is made to execute any statements on the database.
I've read around and seen the problem when you have a relationship to a non PK field, but that doesn't fit my case.
Can anyone shed any light on this situation for me? What incredibly obvious thing am I missing here?
Many thanks.
Paul Prewett
Post up the schema of the parent table.
if you look here, some other people have had your problem.
http://forums.microsoft.com/msdn/ShowPost.aspx?PostID=3493504&SiteID=1
It appears that Linq2SQL has trouble mapping some foreign keys to some primary keys. One guy had a resolution, but I think you are already mapping to an IDENTITY column.
Since the database isn't being called I think you have to look at the mappings linq to sql is using. What does the Association look like? There should be an Association on both the parent and child classes.
Take a look at the linq to sql Association between the two classes. The Association should have a ThisKey property. The cast that is failing is trying to cast the value of the property that ThisKey points to, I think.
As far as I can tell there can be a problem when there is more than one key and the type of the first key does not match the type that ThisKey points too. I'm not sure how linq would determine what the first key is.
From the looks of it you only have one key and one foreign key so that shouldn't be the problem, but the designer, if you are using it, has been known to get creative.
I'm pretty much guessing, but this looks like something I've seen before.
Is this an example of this bug? If so, try running your code in .NET 4.0 now that the beta is out.
If, like me, you aren't ready to start using the beta, you may be able to work around the problem. The issue seems to be that LINQ does not properly support relationships defined on non-primary key fields. However, the term "primary key" does not refer to the primary key defined on the SQL table, but the primary key defined in the LINQ designer.
If you dragged your tables into the designer, then Visual Studio automatically inspects the primary key defined in the database and marks the corresponding class field(s) as "primary keys". However, these do not need to correspond to each other. You can remove the key Visual Studio chose for you, and pick another field (or group of fields). Of course, you need to make sure this is logical (you should have a unique constraint in the database on the field/fields you choose).
So I had 2 tables/classes related to eachother using an alternative key. The parent table had 2 keys: a surrogate primary key defined as an int, and an alternative natural key defined as a string. In the LINQ designer, I had defined the association using the alternative key, and I experienced the InvalidCastException whenever trying to update that association field on the child object.
To work around this, I went into the LINQ designer, selected the int, and then changed the Primary Key property from True to False. Then I chose the string, and set it's Primary Key property to True. Recompiled, retested, and the InvalidCastException is gone.
Looking at your screen shot it looks like you may be able to fix your issue by changing the LINQ primary key on ResponseCode from ResponseCode.ID to ResponseCode.ResponseCodeTableID
ResponseCode rc = new ResponseCode()
{
SurveyQuestionName = "Q11",
Code = 3,
Description = "Yet another code"
};
and:
INSERT INTO tblResponseCode
(responseCodeTableId, surveyQuestionName, code, description)
VALUES (13683, 'Q11', 3, 'Yet another code')
Are not the same, you are not passing in the foreign key reference. Now, I'm huge n00b at LINQ2SQL, but I'd wager that LINQ2SQL is not smart enough to do that for you, and it expects it as the first parameter of the anonymous dictionary, and is trying to cast a string to an integer.
Just some ideas.
This block:
codebookVersion.ResponseCodes.Add(rc);
db.SubmitChanges(); //exception gets thrown here
Can you try InsertOnSubmit instead of Add? i.e.
codebookVersion.ResponseCodes.InsertOnSubmit(rc);
I think Add is not meant to be used to insert records if my memory serves me right. InsertOnSubmit is the one to use.
To try and narrow down the culprit.
Have you tried replacing the anonymous dictionary with something like:
ResponseCode rc = new ResponseCode();
rc.SurveyQuestName = "Q11";
rc.Code = 3;
rc.Description = "Yet Another Code";
I've yet to really work with .NET 3.5 yet (day job is still all 2.0), so I'm wondering if there is an issue with passing the data using the anonymous dictionary (The cases don't match the SQL Columns for one).
Yea, I've read that and other posts, but it always seems to involve someone linking up to a field that simply has a unique contraint. Or in this guy's case (which does sound exactly like mine), he didn't get a solution.
Here's the parent table:
tblResponseTable definition (which maps to CodebookVersion)
COLUMN_NAME TYPE_NAME
id int identity
versionTag nvarchar
responseVersionTag nvarchar
versionTag does have a unique contraint on it, but that's not represented anywhere that I can see in the LINQ-to-SQL stuff - and since nothing ever goes to the database... still stuck.
Mike, I hear you. But no matter where I look, everything looks correct. I've checked and rechecked that the ResponseTableId is an int and that Id is an int. They're defined as such in the designer and when I go look at the generated code, everything again appears to be in order.
I've examined the associations. Here they are:
[Table(Name="dbo.tblResponseCode")]
public partial class ResponseCode : ...
...
[Association(Name="CodebookVersion_tblResponseCode", Storage="_CodebookVersion", ThisKey="ResponseCodeTableId", OtherKey="Id", IsForeignKey=true)]
public CodebookVersion CodebookVersion
{
...
}
[Table(Name="dbo.tblResponseCodeTable")]
public partial class CodebookVersion : ...
...
[Association(Name="CodebookVersion_tblResponseCode", Storage="_ResponseCodes", ThisKey="Id", OtherKey="ResponseCodeTableId")]
public EntitySet<ResponseCode> ResponseCodes
{
...
}
And a screenshot of the association in case that will help:
Any further thoughts?
ResponseCode rc = new ResponseCode()
{
CodebookVersion = codebookVersion,
SurveyQuestionName = "Q11",
Code = 3,
Description = "Yet another code"
};
db.ResponseCodes.InsertOnSubmit(rc);
db.SubmitChanges();
You may want to check to see that any fields in your database tables which are set by the db server when inserting a new record have that reflected in the Linq to SQL diagram. If you select a field on the Linq to SQL diagram and view its properties you will see a field called "Auto Generated Value" which if set to true will ensure all new records take on the default value specified in the database.
LINQ to SQL has been deprecated, FYI - http://blogs.msdn.com/adonet/archive/2008/10/29/update-on-linq-to-sql-and-linq-to-entities-roadmap.aspx.
I ran into a very similar problem. I'll link you over to my wordy post: http://forums.asp.net/p/1223080/2763049.aspx
And I'll also offer a solution, just a guess...
ResponseDataContext db = new ResponseDataContext(m_ConnectionString);
CodebookVersion codebookVersion = db.CodebookVersions.Single(cv => cv.VersionTag == m_CodebookVersionTag);
ResponseCode rc = new ResponseCode()
{
ResponseCodeTableId = codebookVersion.Id,
SurveyQuestionName = "Q11",
Code = 3,
Description = "Yet another code"
};
db.ResponseCodes.InsertOnSubmit(rc);
db.SubmitChanges();
Somewhere in your object graph there is a conversion error, the underlying data model (or the Linq To SQL model) has changed. This is typically something like NVARCHAR(1) -> CHAR when it should be STRING, or something similar.
This error is not fun to hunt down, hopefully your object model is small.
We had a similar problem, caused by using non-integer keys. Details and hotfix number are here: https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=351358
The data sources have the same structure, but different data. One would be used for rows that are saved (view mode), and the other one would be for rows that are being added or edited (edit/new rows). How can that be acomplished?
I have a standard foreign key column that references a standard lookup table which has an ID, Name and Active (bit). The combo box column uses that lookup table to show the list, but only active items. Let's say a lookup item is used and later deactivated (Active = 0). The combo box column now shows errors because the ID is not found in the list. Does anyone have any ideas how to solve it?
Not sure if you're still looking but I've just come across the same problem. Here's how I addressed it, hope it is of use to you.
Define a function which returns a DataGridViewComboCell with the appropriate datasource set (collection objects defined elsewhere, note that I'm using EntitySpaces in this example to populate the DataSource):
Private Function GetStockComboDataSource(ByVal type As eStockComboType) As DataGridViewComboBoxCell
Try
Dim cell As New DataGridViewComboBoxCell
Select Case type
Case eStockComboType.StockIn
cell.DataSource = Me.StockInCol.Query.LoadDataTable
cell.DisplayMember = "FullName"
cell.ValueMember = JCStockInMetadata.ColumnNames.StockItemID
Case eStockComboType.StockItem
cell.DataSource = StockItemCol.Query.LoadDataTable
cell.ValueMember = JCStockItemMetadata.ColumnNames.StockItemID
cell.DisplayMember = "FullName"
End Select
Return cell
End Function
Now when it comes to setting the combo DataSource (I use the RowEnter event here for example):
Private Sub dgvStock_RowEnter(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvStock.RowEnter
Try
If IsNumeric(Me.dgvStock.Rows(e.RowIndex).Cells("ID").Value) Then
Dim intValue As Integer = Convert.ToInt32(Me.dgvStock.Rows(e.RowIndex).Cells("Stock Item").Value)
Me.dgvStock.Rows(e.RowIndex).Cells("Stock Item") = GetStockComboDataSource(eStockComboType.StockItem)
Me.dgvStock.Rows(e.RowIndex).Cells("Stock Item").Value = intValue
Else
Me.dgvStock.Rows(e.RowIndex).Cells("Stock Item") = GetStockComboDataSource(eStockComboType.StockIn)
End If
Catch ex As Exception
JCExceptionLogger.LogException(ex)
End Try
End Sub
Here I switch the combo DataSource depending on whether the ID column is numeric but you can implement whatever business logic you require. Note that I save the value of the cell before setting the combo (intValue). This appears to be necessary otherwise the combo will display as blank.
Is there any reason something like this would not work?
This is the logic I have used many times to update a record in a table with LINQ:
DataClasses1DataContext db = new DataClasses1DataContext();
User updateUser = db.Users.Single(e => e.user == user);
updateUser.InUse = !updateUser.InUse;
db.Log = new System.IO.StreamWriter(#"c:\temp\linq.log") { AutoFlush = true };
db.SubmitChanges();
(updateUser.InUse is a bit field)
For some reason it isn't working. When I check the linq.log it is completely blank.
Could there be a problem with my .dbml? Other tables seem to work fine but I've compared properties in the .dbml and they all match.
It's as if the db.SubmitChanges(); does not detect any updates being required.
The table could not be updated properly because it had no primary key. (Actually it had the column but the constraint was not copied when I did a SELECT INTO my dev table). The DataContext class requires a primary key for updates.
Is the InUse property a "normal" one as far as LINQ is concerned? (e.g. it's not autogenerated or anything funky like that?)
Alternatively, I don't suppose it's a Nullable<bool> is it, with a current value of null? If so, your update line isn't actually doing anything - for nullable Booleans, !null = null.