C＃DataGridView捕获已删除的行

Question

1.

I am using a DataGridView, which is bound to a dataset. There is a bindingNavigator as well.

when a user deletes a row by clicking "bindingNavigatorDeleteItem" button, I am trying to get the row being deleted.

private void bindingNavigatorDeleteItem_Click(object sender, EventArgs e)        
{
        int crow = gridEventType.CurrentCell.RowIndex;

but it returns the newly selected row AFTER deletion of a selected row. so, If I have two rows 0 1 2 and I delete 2

crow is 1, not 2.

Am I missing something here?

2. How do I know whether certain rows are modified in datagridview?

Thanks,

Answer 1

You should be using the DataGridViewCellEventArgs .

private void bindingNavigatorDeleteItem_Click(object sender, 
                                                  DataGridViewCellEventArgs e) 
{
   int cRow =  gridEventType.Rows[e.RowIndex];

   //delete row from persisted storage

   //rebind data to persisted storage or remove row directly:
   gridEventType.Rows.RemoveAt(cRow);
}

For your second point, there's a CellValueChangedEvent .

    private void bindingNavigatorModifiedCell_CellValueChanged(object sender, 
                                                   DataGridViewCellEventArgs e)
    {
         //updated row
         int cRow = e.RowIndex;
    }

Answer 2

使用datagridview.UserDeletingRow事件获取已删除的行对象。

Answer 3

For my Question #1.

• change "DeleteItem" property of BindingNavigator to (none)
• create an eventhandler of "DeleteItem_Clicked"

• get current row number by

  int cRow = gridEventType.CurrentCell.RowIndex;

• delete the current item from bindingsource

  BindingNavigator.BindingSource.RemoveCurrent();

Answer 4

Try to use UserDeletingRow as an event handler for deleting a row, and inside this method you can get the row index and as below:

 private void dataGridView1_UserDeletingRow(object sender, DataGridViewRowCancelEventArgs e)
    {
        int tmpId = (int) e.Row.Index;
    }