Datagridview datasource not updating datingasenior com

17-Sep-2019 07:51

If it's set up that way then any changes you make to the Data Table will be reflected in the Combo Box. Just as a database contains tables and relations between them, so a Data Set contains Data Tables and Data Relations.Now, reading your posts a bit more carefully, there's no reason that calling Update on a Table Adapter should cause the selection in the Combo Box to change. Machines) 'Returning From a dialog Dim Result As Dialog Result Result = dlg New Machine. A Data Set has a Tables property, which is a collection of Data Tables, and a Relations property, which is a collection of Data Relations.Update will save the changes in the Data Table to the database but those changes should already be reflected in the Combo Box because they're already in the Data Table. When you call Fill on a Data Adapter or Table Adapter you are populating a Data Table.I think you need to explain more clearly exactly what you're trying to do, how you're trying to do it, what you expect to happen and what does happen. | MSDN Data Walkthroughs VBForums Database Development FAQ My Code Bank Submissions: VB | C# My Blog: Data Among Multiple Forms (3 parts) Beginner Tutorials: VB | C# | SQL thanks for the databindings heads up - you saved me several hours of googling I'm sure..... Even if you pass a Data Set as an argument, you are populating one of the Data Tables in its Tables collection.You may have figured this out already but I thought I would post this to help someone else that may be having this issue. Add(New cls Combo(n Next ID, "New", "", "", "", "")) combobox. Even if you pass a Data Set as an argument, you are saving changes from one of the Data Tables in its Tables collection. Item("Name") = user Msg Pro Flow1Data Set.orificedata. Add(ds New Row) 'Update the datagridview with the new data Orificedata Table Adapter.If you swap out my arraylist code with your tableadapter I believe it will work. Just as a database table has columns to describe the data and rows to contain it, so a Data Table has a Columns property, which is a collection of Data Columns, and a Rows property, which is a collection of Data Rows. You can manipulate the dataset without committing the changes to the actual database. Update(Pro Flow1Data Set) End Sub Form 1 has the combobox that is not updating.if i look at the update to the combobox, they are not reflected until i exit and restart the app - then they're fine.

datagridview datasource not updating-64

on form load, i issue update commands to the backend database that holds the table which populates the dataset - they work.- oh and lastly, the "why" i'm doing it this way - I'm doing this because the machine that this app is running on is sometimes online and sometimes not and the exchange rate is used in a calc for quotes, hence i want both the end user to actually see what the exchange rate WAS before they went offline or to see what it IS if they are, and also to store it. A Data Table is basically an in-memory representation of a database table.I can equate this issue to the following example: "on Form A a user has a combobox called customers and a button called add customer. Resume Binding() 'Set the new item as the selected item combobox. To String 'refresh the datasource combobox.datasource=? datasource 'select the new field from the table to populate the combobox with combobox.displaymember = "New Display Member" 'redraw the combobox to reflect the values combobox.invalidate()what a pain this one turned out to be for something so simple.....that's usually the way though - too close to the problem to see it clearly - as you can see by the date on this latest post, i stepped away from this one for quite a while. Just as a database contains tables and relations between them, so a Data Set contains Data Tables and Data Relations.That's for bind specific properties of the Combo Box to values from a list or an object.That is used more in situations like binding the Text property of a Text Box.

on form load, i issue update commands to the backend database that holds the table which populates the dataset - they work.

- oh and lastly, the "why" i'm doing it this way - I'm doing this because the machine that this app is running on is sometimes online and sometimes not and the exchange rate is used in a calc for quotes, hence i want both the end user to actually see what the exchange rate WAS before they went offline or to see what it IS if they are, and also to store it. A Data Table is basically an in-memory representation of a database table.

I can equate this issue to the following example: "on Form A a user has a combobox called customers and a button called add customer. Resume Binding() 'Set the new item as the selected item combobox. To String 'refresh the datasource combobox.datasource=? datasource 'select the new field from the table to populate the combobox with combobox.displaymember = "New Display Member" 'redraw the combobox to reflect the values combobox.invalidate()what a pain this one turned out to be for something so simple.....that's usually the way though - too close to the problem to see it clearly - as you can see by the date on this latest post, i stepped away from this one for quite a while. Just as a database contains tables and relations between them, so a Data Set contains Data Tables and Data Relations.

That's for bind specific properties of the Combo Box to values from a list or an object.

That is used more in situations like binding the Text property of a Text Box.

Now, in your situation, you should be binding your Data Table to a Binding Source and then binding that to the Combo Box.