Problem after upgrading from 4.3 to 4.4

[John Slater]

Seems I'm having a problem with an application after upgrading from 4.3 to 4.4, with no other changes made to it. When the application is starting I'm getting the following error:

System.NullReferenceException: Object reference not set to an instance of an object.
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.InternalGetFrozenCols()
at Syncfusion.Windows.Forms.Grid.GridControlBase.Initialize()
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.Initialize()
at Syncfusion.Windows.Forms.Grid.Grouping.GridNestedTableControlCellRenderer..ctor(GridControlBase grid, GridCellModelBase cellModel)
at Syncfusion.Windows.Forms.Grid.Grouping.GridNestedTableControlCellModel.CreateRenderer(GridControlBase control)
at Syncfusion.Windows.Forms.Grid.GridCellRendererCollection.get_Item(String key)
at Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.Initialize()
at Syncfusion.Windows.Forms.Grid.Grouping.GridGroupingControl.OptimizeLoadTime()
at Syncfusion.Windows.Forms.Grid.Grouping.GridGroupingControl.f_Load(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

[Administrator]

Hi,

Are you trying to set ForzenColumns in GridGroupingControl? If so, please refer to the FrozenColumns sample at C:\Program Files\Syncfusion\Essential Studio\4.4.0.51\windows\Grid.Grouping.Windows\Samples\UnderstandingGroupingArchitecture\FrozenColumns\

If you can send us a demo sample showing the mentioned issue, it will be helpful for us to debug it here and give you a solution at the earliest.

Thanks,
Calvin.

[Administrator]

Hi Calvin,

No I am not setting FrozenColumns or doing much else with this GGC. There is no data even being loaded into the dataset (I commented out the dataset load just to be sure the issue wasn't data related). This error appears just as the form becomes visable.

thx

>Hi,

Are you trying to set ForzenColumns in GridGroupingControl? If so, please refer to the FrozenColumns sample at C:\Program Files\Syncfusion\Essential Studio\4.4.0.51\windows\Grid.Grouping.Windows\Samples\UnderstandingGroupingArchitecture\FrozenColumns\

If you can send us a demo sample showing the mentioned issue, it will be helpful for us to debug it here and give you a solution at the earliest.

Thanks,
Calvin.

[John Slater]

Calvin, I have not been able to reproduce this issue with a new project. But I still need help with this issue. I realize it is difficult to determine a possible solution when you cannot reproduce the problem, but this issue did NOT occur with Version 4.3. This project was originally built with VS2003 and was migrated to VS2005, but again ran fine with 4.3, and stopped working under 4.4.

I have however; narrowed the problem down to one line of Generated Code which causes the aformentioned errror:

this.gridGroupingControlMasterRecipe.TableDescriptor.Relations.AddRange(new Syncfusion.Windows.Forms.Grid.Grouping.GridRelationDescriptor[] {gridRelationDescriptor1});

Commenting this line of code prevents the error from occuring.

Thanks

>Hi Calvin,

No I am not setting FrozenColumns or doing much else with this GGC. There is no data even being loaded into the dataset (I commented out the dataset load just to be sure the issue wasn't data related). This error appears just as the form becomes visable.

thx

>Hi,

Are you trying to set ForzenColumns in GridGroupingControl? If so, please refer to the FrozenColumns sample at C:\Program Files\Syncfusion\Essential Studio\4.4.0.51\windows\Grid.Grouping.Windows\Samples\UnderstandingGroupingArchitecture\FrozenColumns\

If you can send us a demo sample showing the mentioned issue, it will be helpful for us to debug it here and give you a solution at the earliest.

Thanks,
Calvin.

[Administrator]

Hi,

This is a bug in our code. Thanks for reporting it. We need to add an additional null reference for TableDescriptor != null in this method.

      /// 

        public override int InternalGetFrozenCols()

        {

            if (TableDescriptor != null && TableDescriptor.GetFrozenColumn() != "")

                return TableDescriptor.GetColumnIndentCount() + TableDescriptor.GetFrozenColumnCount() - 1;

            return base.InternalGetFrozenCols();

        }

With the current code, you can work around the problem by deriving the GridTableControl and overriding that method. We will also provide a patch for 4.4 in a week or so with a fix for this issue.


Thanks,
Calvin.

[Administrator]

Thanks for the response. I will test the patch when it becomes available.

>Hi,

This is a bug in our code. Thanks for reporting it. We need to add an additional null reference for TableDescriptor != null in this method.

      /// 

        public override int InternalGetFrozenCols()

        {

            if (TableDescriptor != null && TableDescriptor.GetFrozenColumn() != "")

                return TableDescriptor.GetColumnIndentCount() + TableDescriptor.GetFrozenColumnCount() - 1;

            return base.InternalGetFrozenCols();

        }

With the current code, you can work around the problem by deriving the GridTableControl and overriding that method. We will also provide a patch for 4.4 in a week or so with a fix for this issue.


Thanks,
Calvin.

[Johan Djupmarker]

Where can I find the patch?

/Johan

[Administrator]

Hi Johan,

Can you please open a DirectTrac so that we can send you the private patch link there?

Thanks,
Calvin.

[Raju Dantuluri]

We have run across what appears to be the exact same problem. (VS2003->VS2005 and 4.3->4.4 migration causing Grouping Grid to break). How can we download the patched binaries?

Thanks in advance...