RadGridView scrolling

[Shweta]

hi,

Can anyone guide me in how to change the scrolling position of the scoll bar of radGridView  by code behind. 

regards,

Shewta

[Nikolay]

Hi Shweta,

You can scroll RadGridView programmatically. Just call RadGridView.GridElement.ScrollToRow() method passing as a parameter either the index of the desired row, or the row itself:

this.radGridView1.GridElement.ScrollToRow(23);

If you have additional questions, feel free to contact me.

Best wishes,
Nikolay
the Telerik team

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[Sudip Vidyarthi]

I am unable to scroll to last row smoothly...whenever a new row is added, the scroll bar seems at last position but actualy the data are of not reflecting properly whn updated

[Svett]

Hi Sudip Vidyarthi,

Thanks for writing.

I am enclosing a sample project which demonstrates how you can scroll to the last row.

All the best,
Svett
the Telerik team

[OD]

I need to scroll row by row my gridview
Is there a way when i scroll in the end of the lines to see only the last rows ? (for example, when i am at the last row, i want to see only the last)

i don't know if you understand what i mean, i don't speak english very well ^^

[Svett]

Hello Nermond,

If you want to perform scrolling row by row, you should change the ScrollMode of RowScoller in the following manner:

this.radGridView1.TableElement.RowScroller.ScrollMode = ItemScrollerScrollModes.Discrete;

If you want to see only one row at time in the RadGridView's viewport, you should change its height or shrink the RadGridView's height. You can change the height of all rows by using the following code snippet:

this.radGridView1.TableElement.RowHeight = 50;

I hope that you find this information useful.

Greetings,
Svett
the Telerik team

[OD]

super, i didn't know "Rowscroller" :)
In fact, what i need to do is an infinite smooth scroll in the gridview. After the last row, i want to see the first row again, etc....
you think there's a way ?

[Svett]

Hi Nermond,

There is no way to achieve that. The scrolling in RadGridView is based on the virtualization engine. It is designed to process the rows sequentially until the last one is reached. There is no way to customize this approach.

Kind regards,
Svett
the Telerik team

[Developer]

[quote]Svett said:Hi Sudip Vidyarthi,

Thanks for writing.

I am enclosing a sample project which demonstrates how you can scroll to the last row.

All the best,
Svett
the Telerik team

 

 

[/quote]

This doesn't seem to work if I have added two SortDescriptors to my RadGridView. I suspect the row indexes don't get updated, so that the bottom row ends up not necessarily having the highest index value. Is it possible to programmatically scroll to bottom-most row after sorting has taken place?

[Dimitar]

Hello Keith,

Thank you for writing.

The provided solution should work for all cases regardless of the rows order. Please note that the ChildRows collection should be used since the indexes in the Rows collection are not changed after the sorting operation. Nevertheless you can use a direct index as well:

this.radGridView1.TableElement.ScrollToRow(radGridView1.ChildRows.Count);

I hope this helps.

Regards,
Dimitar
Telerik

 

 

[Developer]

[quote]Dimitar said:Hello Keith,

Thank you for writing.

The provided solution should work for all cases regardless of the rows order. Please note that the ChildRows collection should be used since the indexes in the Rows collection are not changed after the sorting operation. Nevertheless you can use a direct index as well:

this.radGridView1.TableElement.ScrollToRow(radGridView1.ChildRows.Count);

[/quote]

Thank You Dimitar,

But, wouldn't that just take the Count of ChildRows and scroll to the record whose index in Rows matches that count? If the indexes in Rows do not change, I don't think this gets around the issue. 

I have tried to do this.radGridView1.TableElement.ScrollToRow(radGridView1.ChildRows.Count - 1), since just using Count would be out of the zero-based index range. But, this is not scrolling all the way to the bottom.

I believe what I would need to do is to get the last element in ChildRows, and then lookup what that element's index would be in Rows, and use that integer as the parameter in this.radGridView1.TableElement.ScrollToRow(). Can you tell me if that is possible and how to go about it?

[Dimitar]

Hi Keith,

Thank you for writing back.

This works as expected on my side. In addition the rows indexes in the ChildRows collection should be changed after the grid is sorted. More Information about this collection can be found here. This is why I want to kindly ask you to post a support ticket for this. There you should attach a sample project that reproduces the issue. You can specify the exact version of our controls that you are using as well. This will allow us to further investigate this case and provide you with a proper solution.

You can also include a reference to this forum thread.

Thank you in advance for your cooperation.

Regards,
Dimitar
Telerik

 

 

[paulo g]

Hi

About "this.radGridView1.TableElement.ScrollToRow(radGridView1.ChildRows.Count);"

Has  radpivotgrid  got some similar functionallity?

 

Regards

Paulo

[Dess | Tech Support Engineer, Principal]

Hello, Paulo,

The ScrollToRow method is relevant only for RadGridView. RadPivotGrid doesn't have such an equivalent.

The possibility that RadPivotGrid offers is to manage directly the value of the respective scrollbar in RadPivotGrid. Feel free to increase/decrease the Value property of the PivotGridElement.VScrollBar and PivotGridElement.HScrollBar.
 
I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

 

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik