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BIndingSource Update Issue

Posted on 2007-11-16
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Last Modified: 2013-12-17
I have a textbox linked to a dataset using bindingsource. What's happening is that when i want to save the changes to the database it is not taken the changes.
I use something like this.
bb.bindingsource.endedit();
dttableadapter.update(datasetname.table);
If I look at the dataset in the IDE viewer I can see the record that has been changed properly. For some reason it not flagging as changes though.
I have even tried:
Datatable data = datasetname.table.getchanges();
int rec = data.rows.count
and nothing shows. It is just a null value. I am not sure if I am missing something for the bindingsource or not.
Very odd.

This is c# and 2005.

Any ideas would be great!
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Question by:bman9111
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Expert Comment

by:topdog770
ID: 20313329
How are you connecting your bindingsource to the datatable?

Are you calling AcceptChanges somewhere along the way?
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Author Comment

by:bman9111
ID: 20313678
I am connected through the datatable component. No I have not used any acceptchanges command.
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Expert Comment

by:topdog770
ID: 20314461
If you call getchanges from the databinding itself, are the changes visible.  I'm thinking that there may be a disconnect between your binding and the dataset table your checking for changes.
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Author Comment

by:bman9111
ID: 20314615
No its not showing changes. The weird part is that if you place your cursor over it via the IDE you can see the row changes.

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Expert Comment

by:topdog770
ID: 20316146
Do you have a datagridview using the same binding source as the TextBox?  If so, make a change in the textbox THEN click in the datagridview and I am expecting that the dataset will have changes that get updated to the DB
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topdog770 earned 125 total points
ID: 20316193
Also, bman, where do you call EndEdit from and what is the bb object?  

I typically set up a function, like the Row_TextChanged function below that I call when the user changes the text in any bound controls.

Calling the EndEdit() function pushs the changes back to the dataset / datatable, etc behind the binding source
 void Row_TextChanged(object sender, EventArgs e)
        {
            this.bindingSource1.EndEdit( );
            Products.PACK_LABEL_PRODUCTSRow r = this.GetCurrentBindingSourceRow( );
 
            if (r != null)
            {
                if (r.RowState == DataRowState.Modified)
                {
                    SetSaveButtonEnabled( true );
                }
            }
        }

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Expert Comment

by:topdog770
ID: 20316204
If you have an OK button or some similiar, you could also put the EndEdit there.
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Author Comment

by:bman9111
ID: 20320048
ok. I redid all the binding and all seems ok. However even if a change is not done to any of the textboxs it still states there is a change to the dataset.
I am not sure why.

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