[RESOLVED] Inserting data into the DataGridView. How to show columns from different tables?

I need to get a table on my Form that has different columns from differen tables.
As I call many tables by their Identity ID, I also need a way to show the information from that table.


I created a query in my TableAdapter which selects information from 2 different tables. Tested it in the query builder and all was OK.
I tried to put an empty DataGridView onto my Form and inserted the correct BindingSource for my Data Source.
I then added a query and selected the query I created in my TableAdapter.

But, when I ran the program, I got an error:
"Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints."

Weird, because it showed the correct data when I ran the query in The Query Builder....

The problem is exactly what the error message says it is. One or more rows contain a null value in a non-nullable column, duplicate values in a column that must be unique or foreign key values that don't appear in the parent table.

Quote:

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Originally Posted by jmcilhinney

The problem is exactly what the error message says it is. One or more rows contain a null value in a non-nullable column, duplicate values in a column that must be unique or foreign key values that don't appear in the parent table.

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Yup. If I add the columns that are not supposed to be nulls the error disappears. But still, I can not add columns from other tables... ? That is the part I can't figure out...

We don't know anything about your data other than it comes from multiple tables. That's not enough information for us to provide any insight.

Quote:

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Originally Posted by jmcilhinney

We don't know anything about your data other than it comes from multiple tables. That's not enough information for us to provide any insight.

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Oh, ok. Sorry mate...
I have somewhat long and complex column and query names (in finnish), so going to give a simplified example...





In the Data Set 'DS_Example' I have 2 tables: Table1 and Table2. In the TableAdapter of Table 1 I created a query named "Fill_TEST":

Code:

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SELECT Table1.Date, Table1.PersonID, Table1.Value1, Table1.Value2, Table1.Value3, Table2.PersonName
FROM Table1 INNER JOIN
Table2 ON Table1.PersonID = Table2.PersonID
WHERE (Table1.BooleanVal <> 'True')

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The above code tested out well in the Query Builders Execute Query...

Then on my Form1 I added a DataGridView1 which I connected to a DataSource: DS_Example -> Table1BindingSource
After that I added a query from the DataGridView1 "Add Query" option and chose an existing query "Fill_TEST"...

The program added a toolstrip with a toolstripbutton "Fill_TEST" and some code to populate the datagridview.

When I run the program and press the Fill_TEST -button, I only get information from Table1.

I tried to modify the DataGridView1 by adding columns, but I didn't find a way to add columns that are from another table.


So, basically the VB code that should populate the DataGridView1 with the query I wrote, does so only for the information of Table1, not the "PersonName" information of Table2. The two tables are relation connected by the "PersonID"...


The VB code for "Fill_TEST" -toolstrip button:

Code:

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Private Sub Fill_TESToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Try
            Me.Table1TableAdapter.Fill_TEST(Me.DS_Example.Table1)
        Catch ex As System.Exception
            System.Windows.Forms.MessageBox.Show(ex.Message)
        End Try
    End Sub

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