private void toolStripButton2_Click(object sender, EventArgs e) { // this is the wrong way to perform a cancel / undo operation // and an "Edit level mismatch in CopyState" exception will be thrown DataList list = (DataList)this.dataListBindingSource.DataSource; this.dataListBindingSource.CancelEdit(); list.CancelEdit(); list.BeginEdit(); }
private void cancelButton_Click(object sender, EventArgs e) { // get business object reference DataList list = (DataList)this.dataListBindingSource.DataSource; // cancel current row this.dataListBindingSource.CancelEdit(); // unbind the UI UnbindBindingSource(this.dataListBindingSource); // cancel the list and restart editing list.CancelEdit(); list.BeginEdit(); // rebind the UI this.dataListBindingSource.DataSource = list; }