How to autoscroll a datagrid

[hilario1638]

i want to automatically scroll the data grid to a specific cell that is not visible on screen, how can i do this?

I've tryed to get the HScrollBar from the DataGrid.Controls enumeration and adding a value value until it gets the desired cell in the screen but it seems like the scrollbar is disconnected from the datagrid

 

[obislavu]

Locate the row and the column index of the cell and then call Select():
int vRowIndex= ;
int vColumnIndex= ;
DataGridColumnStyle vDataGridColumnStyle;
vDataGridColumnStyle= m_DataGrid.TableStyles[0].GridColumnStyles[vColumnIndex];
m_DataGrid.BeginEdit(vDataGridColumnStyle,vRowIndex);
m_DataGrid.EndEdit(vDataGridColumnStyle,vRowIndex,true);
mDataGrid.Select(vRowIndex);
-obislavu-

 

[hilario1638]

thanks for the code obislavu, but it doesn't scrolls left or right, it just scrolls up and down, i need to scroll it left or right also. thanks anyway

 

[hilario1638]

ok, this is the real problem: i have a data grid with lots of columns. I use tab to switch columns, but when a column doesnt appear on the screen, the datagrid doesn't scrolls left, so i decided scroll it myself, that was my first post. any solution to this problem??

 

[obislavu]

I think it can be done by implementing your own autoscroll for example :
public class AutoScrollArgs : EventArgs
{
private readonly bool HScroll ;
private readonly bool VScroll ;
...


}
public delegate void AutoScrollEventHandler(object sender, AutoScrollArgs e);

public class AutoScroll
{
public void StartScroll();
public void StopScroll();
public event AutoScrollEventHandler AS;
protected virtual void OnAlarm(AlarmEventArgs1 e)
{
if (AS != null)
{
// Invokes the delegates.
AS(this, e);
}
}
}

public class ScrollMe
{
public void DoAutoScroll(object sender, AlarmEventArgs1 e)
{
// here put your code to generate DataGrid.Scroll event
// until your cell is in the visible area
}
}
public class AutoScrollDriver
{
ScrollMe sc= new ScrollMe();
// Instantiates the event source.
AutoScroll ascroll = new AutoScroll();
// Wires the DoAutoScroll
ascroll.AutoScroll += new AutoScrollEventHandler(sc.DoAutoScroll);
}


-obislavu-

 

[hilario1638]

sorry 'bout my ignorance, but, how can i implement this on my DataGrid??

 

[jamming]

Hi there!

I found this very helpfull...

http://www.syncfusion.com/FAQ/WinForms/FAQ_c44c.asp#q895q

(5.60 How do I programmatically scroll the datagrid to a particular row?)

I´ts for VB, though, but its easy to translate to c#...

I think, you could use this for scrolling to a specific column also. I build my own class for a datagrid an it worked perfect for me...