EDIT
Thanks for making me notice that I had misinterpreted the question, to assign the default value, it would only be enough to assign the image corresponding to the property NullValue
In the case of having a DataGridView
that has 2 DataGridViewTextBoxColumn
and 1 DataGridViewImageColumn
dataGridView1.Columns[2].DefaultCellStyle.NullValue = Properties.Resources.image01;
Needless to say, it is a property that you can assign before adding the object of type DataGridViewImageColumn
to DataGridView
in question
DataGridViewImageColumn a = new DataGridViewImageColumn();
a.DefaultCellStyle.NullValue = dataGridView1.Columns[1].DefaultCellStyle.NullValue = Properties.Resources.descarga;
dataGridView1.Columns.Add(a);
However, it would be interesting to read the DataGridViewImageColumn , so you can apply this more precisely to your problems ..