I am having some trouble with updating/inserting data through a databound
DataGridView. I call the TableAdapter.Update method on the RowLeave event.
When the user tabs out of the row to the new row, the update occurs
correctly. What I want to do is fire the update whenever the ...

I have a BindingNavigator, BindingSource (Custom Object) and a DataGridView.
What i want to do is disable the delete button on the BindingNavigator based
on the value of a particular field within the selected row of the
DataGridView

Let's say you have a form with a bunch of text boxes bound to a binding
source.  The form also has a "Save" button which you want enabled only if
the user has made changes.  The Save button will call
bindingSource.EndEdit() and will then instruct the dataset to update the

This is on .Net 2.0 in a WinForms application.
I have a DataGridView that is bound to a BindingSource.  The
DataGridView has 3 columns.  The first two are "normal" text columns and
the last is a combo box column.

It is awkard to code up the following:
double dFreq =
Convert.ToDouble(dataGridView1.Rows[CurrentFrequency].Cells[freqDataGridViewTextBoxColumn.Index].Value);
It seems to me (comeing from CBuilder6) that I should be able to specify the

New to threading in C#, I discovered I needed a delegation mechanism to
update a textbox (for example) from a timer thread.  However, the timer
thread seems to have no problem getting data from my datagridview nor
"selecting" a row nor updating an unbound value on that grid.  Did ...

I need to populate a table with a list of paramaters comming from a business
object as properties. I do not want the normal dataview were a property is
represented by a column. Instead I would like for example two columns. The
first shall contain the names of the parameters and ...

I have this rather simple problem. I have created a class which
implements INotifyPropertyChanged. This class has a public property (of
type long) which is bound to a standard textbox using a BindingSource
object as broker. This works fine, except when the underlying value is

Is there a way to get the data grid behavior of working with multiple
rows, but use conventional controls like text boxes and combo boxes?
Let's say I have form that is used for orders.  Each order can have
multiple lines, but I don't want to use a datagrid for order lines.

Trying to bind datetimepicker to bindingsource I face 2 problems:
1) The typical problem - I can't bind to nulls. Summing up, what is the
easiest way to allow datetimepicker to be bound to null?
2) This thing is about date formats in which datetimepicker stores dates. In

Just starting out with VB2005 using SQL2005 Express, I hope that someone may
be able to help me, I have created a windows application and have created a
connection to the sql database (Northwind) and added the required tables to
the data sources using the wizard, I have dragged ...

I use a business layer which I wan´t to bind to Windows Forms
controls. I make heavy use of interfaces, I now I have a problem:
I attached a sample Project to show the problem:
When you test this little application, you will see the the databinding

I have a VB .NET application that is communicating properly with an
Access DB. I have a slew of textbox controls bound to a dataset and
when the application launches, the fields are correctly populated.
If someone changes a value in one of the text boxes, I need to have a

I've created a typed DataSet called MembershipDataSet.  MembershipDataSet
contains a baked-in DataRelation between two tables which gets created in
the constructor and added to the base class DataRelationCollection.
In VS forms I drag the MembershipDataSet component onto the form. ...

I'm trying to write a component that has a DataSource and DataMember
property much like the DataGridView. I want to use the CurrencyManager
so I need to access the BindingContext of the form. But how can I do
this? If I wrote a control, I could just do