DataGridView ScrollBars

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Chuck@newsgroup.nospam - 15 Jan 2006 17:23 GMT

Is their a way to determine if the DataGridView Scrollbars are
visible?
Is there a way to be notfied when their visible property has changed?

thanks,

p.s. this doesn't work for the datagridview for some reason.

[DllImport("User32", CharSet = CharSet.Auto)]
private static extern int GetWindowLong(IntPtr hWnd, int
Index);

private const int GWL_STYLE = (-16);
private const int WS_VSCROLL = 0x200000;
private const int WS_HSCROLL = 0x100000;

bool HasHorizontalScrollbar(Control ctrl)
{
return (GetWindowLong(ctrl.Handle, GWL_STYLE) &
WS_HSCROLL) != 0;
}

bool HasVerticalScrollbar(Control ctrl)
{
return (GetWindowLong(ctrl.Handle, GWL_STYLE) &
WS_VSCROLL) != 0;
}

Reply to this Message

"TerryFei" - 16 Jan 2006 07:13 GMT

Hi kh,
Thanks for your post.

There are 2 types of Scrollbars:
1. Scrollbar that is created by WS_VSCROLL or WS_HSCROLL window style.
2. Scrollbar control, which is the child control of the parent control.
DataGridView uses the second type of Scrollbar. So we should enumerate
DataGridView’s child controls, then check to see if this scroll bar is
visible. Sample code sinppet listed below:

private void button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < this.dataGridView1.Controls.Count; i++)
{
if (this.dataGridView1.Controls[i] is VScrollBar)
{
if (this.dataGridView1.Controls[i].Visible)
{
MessageBox.Show("VScrollBar is visible");
}
}
if (this.dataGridView1.Controls[i] is HScrollBar)
{
if (this.dataGridView1.Controls[i].Visible)
{
MessageBox.Show("HScrollBar is visible");
}
}
}
}

This code snippet works well on my side. Hope it helps

Best regards,
Terry Fei

Microsoft Online Partner Support

Signature

Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

--------------------

>From: Chuck@newsgroup.nospam
>Subject: DataGridView ScrollBars
[quoted text clipped - 9 lines]
>Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP11.phx.gbl
>Xref: TK2MSFTNGXA02.phx.gbl

microsoft.public.dotnet.framework.windowsforms.controls:26442

>X-Tomcat-NG: microsoft.public.dotnet.framework.windowsforms.controls
>
[quoted text clipped - 25 lines]
>WS_VSCROLL) != 0;
> }

Reply to this Message

Chuck@newsgroup.nospam - 21 Jan 2006 02:42 GMT

perfect, thanks

>Hi kh,
>Thanks for your post.
[quoted text clipped - 79 lines]
>>WS_VSCROLL) != 0;
>> }

Reply to this Message

"Jeffrey Tan[MSFT]" - 23 Jan 2006 05:55 GMT

You are welcome

Best regards,
Jeffrey Tan
Microsoft Online Partner Support

Signature

Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

Reply to this Message

"Jeffrey Tan[MSFT]" - 18 Jan 2006 07:55 GMT

Hi Chuck,

Does my colleague Terry's reply make sense to you? If you still need any
help, please feel free to feedback. Thanks

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights

Reply to this Message

DataGridView ScrollBars

Free Magazines