[Solved] Scroll can't keep up with the mouse When scrolling many columns

[Minwei]

We occured a problem when scrolling a huge amount of columns(about 180 columns). The horizonal scroll bar just can't keep up with the mouse.
The mouse is on the right side, while the scrollbar is just in orginal place. The CPU is busy processing the layout.
code fragment:

	for (int i = 0; i < format.names.Count; i++)
	{
		GridViewDataColumn column = new GridViewDataColumn();
		column.Header = format.names[i];
		column.DataMemberBinding = new System.Windows.Data.Binding("[" + i.ToString() + "]");
		this.gv.Columns.Add(column);
	}

The data columns are generated dynamiclly in code behind, not declare in markup.

[Vlad]

Hello,

This is since the columns will be measured and cells will be added on demand (the default grid behavior with enabled horizontal virtualization). You can improve this if you set ColumnWidth for the grid to some pixel value - for example ColumnWidth="100".

Regards,
Vlad
the Telerik team

[Minwei]

Thanks Vlad ,

We have set the width to 100, it improved a little.
Then we changed the grid to silverlight DataGrid, it also has this problem, but it's much more responsive.

We want to make use of RadGridView for other functions such as filtering.
Is there anything else I can do to improve the scrolling performance and user experience?

[Vlad]

Hello,

With our Q1 2011 Beta (will be released after a month) you will get much better horizontal scrolling. We rewrote completely our horizontal virtualization. 

All the best,
Vlad
the Telerik team

[Minwei]

That's great.
We are looking forward to the improvement.

Thanks.