Dataadapter not updating who is rich cronin dating
Row Updated = new Sql Row Updated Event Handler(Adapter Row Updated); And here is the event handlerprivate void Adapter Row Updated(object sender, Sql Row Updated Event Args e) Now when you Update the database all your rows will have the same IDs.
Add(Parent FK); If you are merging 2 databases together I would recommend following the same steps above for the second database. Tables["Child Table"]); Now just check the destination database and everything should be there.
Open(); Now we setup our adapterstring Parent Query = "SELECT * FROM Parent Table";string Child Query = "SELECT * FROM Child Table"; Sql Data Adapter Parent Adapter = new Sql Data Adapter(Parent Query, Connection); Sql Data Adapter Child Adapter = new Sql Data Adapter(Child Query, Connection); At this point we can fill our Data Set. Fill(My Data Set, "Child Table"); We have 1 Data Set with 2 Data Tables in it, Parent Table and Child Table. This means when you merge your 2 Data Sets nothing will get written to your database because nothing has changed.
Before we do we need to setup an event handler for updating the Identity column in each row when it gets written back to the database. The database has an Identity field and a Foregn Key constraint. This is done so that when we update the ID column for a row that ID gets propagated to any row within the child tables that contain the same Identity. Any new data should be marked as Added so the Adapter will Insert it into the database when you perform the Update.
are iterated over and each parameter variable in the update statement is replaced with the value for that parameter. Event Args e) private void da_Row Updating(object sender, Sql Row Updating Event Args e) object.
Single quote delimiters are added around the string values. The solution delimits the string values for the Category Name and Description fields in the Categories table from the Northwind database used in this example.
It seems like the parameters are saying "Ok, this specific row in this specific dataset.table, update these specific fields in this specific database".
I'm not sure how to accomplish that when working with a datagrid.
This allows you to maximize the performance of your ADO.
I'm having trouble updating a sql server database with a dataset using a dataadapter.
I have used the dataadapter with success in the past when adding new rows, using a single table, and just calling the dataadapter.update command. Product Name From [Order Details] INNER JOIN Products ON [Order Details]. Product ID Where Order ID='" & str Order ID & "'", sql Conn" This is pulling the data from 2 different tables (Order Details and Products) and then joining them and filling the dataset, and I am seeing the exact results I want.
The sql statement that I'm using to fill the dataset looks like this: "Select [Order Details]. I tried using dataadapter.update but it informed me that I now need to use dataadapter. Ok, so I've looked up how to use Update Command but I cannot for the life of me figure out how to set up the right sql command statement.
Part of what has me confused is the Update Command examples I have seen are working with a specific row and updating that rows data.
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I have tried to get various combinations of setting parameters and update commands to work, but the Database is not getting updated from the new Data Table values. I am hoping someone can tell me what it is I am doing wrong/missing, or what is the correct path to take.