c# identifying scrollbar on control

How can I check if a scrollbar is present on a datagridview in Winforms.

Something like (pseudocode)

开发者_运维技巧If(datagridview.verticalscrollbar = true)
 do something......

Thanks.

There's no property or method specifically for this purpose, but you can tell if the vertical scrollbar is showing by performing the following check:

bool scrolling = (dataGridView.DisplayedRowCount(false) != dataGridView.Rows.Count);

(It compares the total number of rows with the number currently being displayed; if they don't match, a scrollbar will be visible.)

In a Datagridview there are special controls for the scrollbars - not like in an usual panel.

You can do sth. like

private VScrollBar _verticalScrollBar;
private HScrollBar _horizontalScrollBar;

foreach (Control c in _dataGridView.Controls)
    {
        if (c is VScrollBar)
        {
             _verticalScrollBar = c as VScrollBar;
             if (_horizontalScrollBar!=null)
             {
                 break;
             }
        }
        if (c is HScrollBar)
        {
             _horizontalScrollBar = c as HScrollBar;
             if (_verticalScrollBar != null)
             {
                break;
             }
        }
    }

and test if the scrollbar is visible with

if(_verticalScrollBar.Visible==true){
//do something you want when scrollbar is visible
}
else
{
//do something when scrollbar is invisible
}