Question

I have a windows application in which I am going to delete a datarow from a datatable.
But I got an exception.

The given DataRow is not in the current DataRowCollection.

The code:

DataTable dt = new DataTable();
DataRowView currentDataRowView = (DataRowView)DataGridView1.CurrentRow.DataBoundItem;
DataRow row = currentDataRowView.Row;

dt.Rows.Remove(row); // exception here.
DataGridView1.DataSource = dt;

The datatable dt’s information as the image shown.

I think that I already have casted datarowview to datarow.

EDIT:
dt was created from another DataGridView.

                foreach (DataGridViewRow row in DatGridView2.Rows)
                {
                    DataGridViewCheckBoxCell check = row.Cells[0] as DataGridViewCheckBoxCell;
                    if (check.Value != null)
                    {
                        if ((bool)check.Value)
                        {
                            //this row has a checkBox set to true (tick is added)
                            //add this row to dataTable ...
                            DataRow myRow = (row.DataBoundItem as DataRowView).Row;
                            DataRow dr = dt.NewRow();
                            dr[0] = myRow[0];
                            dr[1] = myRow[1];
                            dr[2] = myRow[2];
                            dr[3] = myRow[3];
                            if (!dt.Rows.Contains(dr[0]))
                            {
                                dt.Rows.Add(dr);
                            }
                        }
                    }

Answer 1

I don’t think you can reference a different DataTable than the one where CurrentRow.DataBoundItem is coming from.

Your dt DataTable is being constructed from DataGridView2 but CurrentRow.DataBoundItem is coming from DataGridView1.

You will have to find the matching row in DataGridView1 yourself before you can delete it.