RadGridVIew Index was outside the bounds of the array.

[Paulius Putna]

I was using this blog post example, the one in the comments with updated silverlight, in my project and I kept getting this exception:

Index was outside the bounds of the array.
   at Telerik.Windows.Controls.GridView.IndexTree.Set(Int32 index, Double value)
   at Telerik.Windows.Controls.GridView.IndexTree.set_Item(Int32 index, Double value)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)

I then started fiddling with the sample project supplied and was looking for differences between the projects. I then noticed if you set AutoGenerateColumns to false and supply a column templates it throws this exception. In other cases it works fine and as expected. I would attach a sample project with this error reproduced, but only picture files are allowed so I uploaded it to mediafire and here is the link. Please help me out, because this is closely related to my paging problems I described in this post.

[Paulius Putna]

So I've been working with the project through weekend and I noticed that it doesn't matter if you set any custom defined columns, the exception is thrown only when AutogenerateColumns is set to False.

[Mike]

We have been able to confirm that this error only started occurring in our code after we applied the latest 2011 internal build. Previously we were on 2010.

We don't have time to create a sample project, and will live with the error, but will look in to it further in the next few weeks. I guess I'm hoping you might resolve it first :)

Will keep an eye on this thread, fingers crossed.

[Mike]

Its just clicked, I followed that blog when writing our code as well. Explains why were both broken.

[Mike]

It works if you dont override "TotalItemCount" in the implementation of "QueryableCollectionView". I'm not sure yet if there are repercussions to the server side functionality by doing this.

[Ivan Ivanov]

Hi,

I'm attaching a project with the latest version of this approach. 

All the best,
Ivan Ivanov
the Telerik team

[Mike]

Thanks for the quick response, our code is different to the blog and closer to the new sample but we still get the error. If the blog code now works for everyone we will investigate our code further.

Thanks again

[Paulius Putna]

All you have to do is convert the project to 2011 Q1 telerik binaries and you get the exception.

[Milan]

Hello Paulius Putna,

We have identified the issue and we will be fixing it as soon as possible. I will notify you when the issue is fixed.

Your Telerik points have been updated. 

Regards,
Milan
the Telerik team

[Bryan Hill]

Bump. Just upgraded and I am having the same issue.  

[Bryan Hill]

Found a work around in my override for the QueryableCollectionView!  The important part is to keep the base property synced with your override property.

private int itemCount;

public void SetTotalItemsCount(int count)
{
    TotalItemCount = count;

    OnPropertyChanged(new PropertyChangedEventArgs("ItemCount"));
    OnPropertyChanged(new PropertyChangedEventArgs("TotalItemCount"));
}

public override int TotalItemCount
{
    get
    {
        return itemCount;
    }
    protected set
    {
        itemCount = value;
        base.TotalItemCount = value;
    }
}

[Bryan Hill]

Ok I think I got it now.  Only use the method SetTotalItemsCount from your code to set the totals.

private int itemCount;

public void SetTotalItemsCount(int count)
{
    itemCount = count;
    base.TotalItemCount = count;

    OnPropertyChanged(new PropertyChangedEventArgs("ItemCount"));
    OnPropertyChanged(new PropertyChangedEventArgs("TotalItemCount"));
}

public override int TotalItemCount
{
    get
    {
        return itemCount;
    }
    protected set
    {
        //base.TotalItemCount = value;
    }
}

public override int ItemCount
{
    get
    {
        return itemCount;
    }
}

[Bryan Hill]

I cannot find any bug in the Issue Tracker for this bug.  When is this getting fixed?  

[Bryan Hill]

Still waiting for a reply.  When will this get fixed?  Cannot find in "Issue Tracker".

[Yordanka]

Hi Bryan Hill,

We have modified DescriptorsExtensions.cs and MyDataContext.cs files of the application attached above so that to fit in the current version of the RadGridView. Please, find it in the attached file. It is working fine with Q1 2011 SP1 binaries.

Let us know if you have additional questions.
 
Best wishes,
Yordanka
the Telerik team

[Kristof]

I have the same issue when using the QueryableDomainServiceCollectionView<T>.
After the QDSCV is created, I set the Parameters collection to the updated values, when refreshing the QDSCV.
When I receive data there is no problem, when I receive once an empty result and try to trigger a new query that returns result. I get the following error:

Index was outside the bounds of the array.

   at Telerik.Windows.Controls.GridView.IndexTree.Set(Int32 index, Double value)
   at Telerik.Windows.Controls.GridView.IndexTree.set_Item(Int32 index, Double value)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)

Also if I add similar changes to the myQDSCV it directly throws the exception above.