JBGrid scoll to first and last row

Trainee

Date of registration: Aug 14th 2012

Thursday, November 22nd 2012, 12:25pm

Hi again,
is there someone that can help me?
I have a JBGrid with a scroll bar.
I also have a button called top and one called bottom.
How can i enable first row when i press TOP and how can i move to last when i press BOTTOM?

Thanks in advanced!

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theuserbl

Intermediate

Posts: 436

Date of registration: Dec 20th 2008

Thursday, November 22nd 2012, 3:48pm

RE: JBGrid scoll to first and last row

Short answer:

Quoted from "fomaxrge"

How can i enable first row when i press TOP

	Jabaco Source
1 2 3 4 5	Public Sub Command1_Click() Dim v As javax#swing#JViewport = JBGrid1.getViewPort v.setViewPosition(New Point(0,0)) JBGrid1.setViewport(v) End Sub

Quoted

and how can i move to last when i press BOTTOM?

	Jabaco Source
1 2 3 4 5	Public Sub Command2_Click() Dim v As javax#swing#JViewport = JBGrid1.getViewPort v.setViewPosition(New Point(0,99999)) JBGrid1.setViewport(v) End Sub

Last one is only a dirty hack. I have had known how to find out the maximum. But currently, I don't remember. So I used a big number (9999) instead.

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theuserbl

Intermediate

Posts: 436

Date of registration: Dec 20th 2008

Thursday, November 22nd 2012, 5:24pm

RE: RE: JBGrid scoll to first and last row

Quoted
Quoted

and how can i move to last when i press BOTTOM?
Jabaco Source
1
2
3
4
5
Public Sub Command2_Click()
   Dim v As javax#swing#JViewport = JBGrid1.getViewPort
   v.setViewPosition(New Point(0,99999))
   JBGrid1.setViewport(v)   
End Sub
Last one is only a dirty hack.

Here a better solution:

Jabaco Source

Public Sub Command2_Click()
   Dim v As javax#swing#JViewport = JBGrid1.getViewport
   Dim vpos As Single = v.getViewSize.getHeight-v.getViewRect.getHeight
   If vpos<0 Then
     v.setViewPosition(New Point(0,0))
   Else
     v.setViewPosition(New Point(0,vpos))
   End If
   JBGrid1.setViewport(v)   
End Sub

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theuserbl

Intermediate

Posts: 436

Date of registration: Dec 20th 2008

Thursday, November 22nd 2012, 5:31pm

And with this you can go to top and bottom, without changing the view position in X:

Jabaco Source

Public Sub Command1_Click()
   Dim v As javax#swing#JViewport = JBGrid1.getViewPort
   v.setViewPosition(New Point(v.getViewPosition.getX,0))
   JBGrid1.setViewport(v)
End Sub

Public Sub Command2_Click()
   Dim v As javax#swing#JViewport = JBGrid1.getViewport
   Dim vpos As Single = v.getViewSize.getHeight-v.getViewRect.getHeight
   If vpos<0 Then
     v.setViewPosition(New Point(v.getViewPosition.getX,0))
   Else
     v.setViewPosition(New Point(v.getViewPosition.getX,vpos))
   End If
   JBGrid1.setViewport(v)   
End Sub

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fomaxrge

Trainee

Posts: 88

Date of registration: Aug 14th 2012

Thursday, November 22nd 2012, 9:51pm

I will try you solutions.
Thank you very much for your help.
It is good that you are here, all of you, and help as.
Thanks again.

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Dani

Intermediate

Posts: 325

Date of registration: Nov 19th 2009

Location: GERMANY

Thursday, November 22nd 2012, 10:32pm

Hey there,

or try this

	Jabaco Source
1 2 3 4 5	'scroll to last row JBGrid1.Parent.changeSelection(JBGrid1.Rows - 1, 0, False, False) 'scroll to firs row JBGrid1.Parent.changeSelection(0, 0, False, False)