Winform DataGridView UserAddedRow to add a new row

Question

It is possible to use event UserAddedRow to add a new row? When it is, do you have an example?

Thanks you in advance.

Answer 1

UserAddedRow event is fired after row added. You can not use it to add something, as it fires after somethign already was added.

According to msdn:

Occurs when the user has finished adding a row to the DataGridView control.

Answer 2

If you are not using data binding, you have to add the columns and rows manually.

dgvApplications.Columns.Add("Col1", "Column 1");
dgvApplications.Columns.Add("Col2", "Column 2");
dgvApplications.Rows.Add("Col1Value", "Col2Value");

But data binding is usually the better option.

BindingList<Application> applications = new BindingList<Application>();
dgvApplications.DataSource = applications;
// set AutoGenerateColumns to false and manually add columns to get pretty column names.
// set AutoGenerateColumns to true to not worry about adding columns in early prototyping
dgvModules.AutoGenerateColumns = true;  

Then if Application implements INotifyPropertyChanged you can do something like this:

applications.Add(new Application{ File="blah.txt" };

The property changed notification will allow the grid to automatically update when the underlying model is changed.

The data binding option helps decouple your GUI from your data. "Model-View-Controller" design pattern helps you later if you need to redesign the GUI, or add a secondary interface such as the web or phone app. http://msdn.microsoft.com/en-us/library/ff649643.aspx