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Let's work to help developers, not make them feel stupid. Related Questions. Update requires a valid UpdateCommand when passed DataRow collection. Net Unhandled System. Net MySQL updating. Adding datarow to datatable in c.. Layout: fixed fluid. Web01 2. Strip HTML. Encode HTML. If you 'drawn' this adapter by your mouse on the form's designer window you'll need a little bit more coding.
Rate the posts that helped you! Print or I miss VB6 printing in. I've created a command and don't know how to assign the. I don't know how to assign the updatecommand to that.
When you run the wizard to generate the typed DataSet, the SQL is generated to update and delete records based on their primary key. If there is no primary key then a record cannot be uniquely identified, so it cannot be updated or deleted. Pretty much all your tables should have primary keys. Add one and then run the configuration wizard again and an UpdateCommand should be created. Why is my data not saved to my database? If I were to use a data adapter that I coded by hand, would I still need the primary key?
The reason I ask is because these are "temporary" tables and really don't see the benefit of having primary keys on them if they're going to be deleted after this app runs it's programming cycle anyway. Boom, now your temp table has a primary key column which can uniquely identify your records for updates and deletes.
When you insert records into the temp table that ID column will get incremented by 1 automatically for you with each new record. It won't enforce any type of relationship, but at least now VB will know which record to go alter.
Where I'm from we only have one bit of advice for new comers: "If you hear banjos, turn and run". VS NetFW 2. Do you need more information? ProductID, Products. ProductIName, Containers. ContainerName, Pictures. PicturePath, ProductCategory. And this will allow me to use easily a Datanavigator to centralize the datas. Is it now clear? Do you have an idea? Thank you again RE: DataAccess - Update requires a valid UpdateCommand Well the UpdateCommand is going to have to have parameters so you should check it and the parameters collection in the UpdateCommand to see if everything is kosher and then make sure that you are setting the parameter values correctly in your code.
Here is just an example of an UpdateCommand. Text that is generated by the wizard building a dataadapter. I guess you SQL looks fine JOIN's confuse me. Two questions : - Does this MS acticle means that we cannot update database including relations using the commandbuilder? I mean, an update table with a similar schema?
Thank you a lot for your help. I found for containers and picture but not for Produtcs. While you are doing this it may also be worth double checking that you had the Generate Insert, Update and Delete statements option selected like the below. Then just click through the wizard, the final screen should confirm that it will create the redo the code required now with the primary key :. I just experienced the same problem, and Jason's answer did work for me: I forgot to assign a primary key for my table.
Just One more reminder to add: After correcting the problem in the table, when going back to the Visual Studio, in the. Otherwise the error will still exist. You should always have a primary key defined column field. Otherwise the problem will always exist. SqlCommandBuilder will not help you if you don't have a primary key field.
Note If there is enough information in the main query, the InsertCommand, UpdateCommand, and DeleteCommand commands are created by default when the TableAdapter is generated. If these commands are not generated, you may receive an error when executing the TableAdapter. Update method. All you have to do is edit the database and ensure that at least one column is identified as a Primary Key.
In my simple example, this could be the name column — although more realistically I would add an auto-numbering identity column which will ensure that all values in that column are unique. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 12 years, 10 months ago. Active 8 months ago. Viewed 56k times. On scDB.
DataSource; myStagingTableAdapter. Update table ; The StagingTableAdapter has an additional query which takes 'filter' as a parameter. Improve this question. Sam Sam 7, 7 7 gold badges 46 46 silver badges 60 60 bronze badges.
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