GDBG ComboBox cell problem

[Ken Law]

I have several GDBGs with editable ComboBoxes that have been working fine for at least 6 months. After moving to 3.0.1.0 they broke.

I have GDBG cell with an editable ComboBox with the StyleInfo Choicelist set to a StringCollection. The StyleInfo.CellValueType is a string and the underlying datatable column is a string. The combox drops down but when an item is selected the cell does not update. If I use only mouse clicks to try to select an item from the combobox, it fails but there is no exception. However, if I then try to type into the combobox field, I get the following exception in the output window:

System.NullReferenceException: Object reference not set to an instance of an object.
at Syncfusion.Windows.Forms.Grid.GridComboBoxCellModel.GetItemValue(Object dataSource, String valueMember, Object item)
at Syncfusion.Windows.Forms.Grid.GridComboBoxCellRenderer.OnKeyPress(KeyPressEventArgs e)
at Syncfusion.Windows.Forms.Grid.GridCellRendererBase.ProcessKeyEventArgs(Message& m)
at Syncfusion.Windows.Forms.Grid.GridCellRendererBase.RaiseProcessKeyEventArgs(Message& m)
at Syncfusion.Windows.Forms.Grid.GridTextBoxControl.ProcessKeyMessage(Message& m)
at System.Windows.Forms.Control.WmKeyChar(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
at System.Windows.Forms.RichTextBox.WndProc(Message& m)
at Syncfusion.Windows.Forms.Grid.GridTextBoxControl.WndProc(Message& msg)
catched at Syncfusion.Windows.Forms.Grid.GridTextBoxControl

[Administrator]

Ken,

we made a couple of fixes with Combobox after 3.0.1.0 but I am not sure if that is related to your problem.

If you prepare a sample project we can debug into it.

Thanks,
Stefan

>I have several GDBGs with editable ComboBoxes that have been working fine for at least 6 months. After moving to 3.0.1.0 they broke.
>
>I have GDBG cell with an editable ComboBox with the StyleInfo Choicelist set to a StringCollection. The StyleInfo.CellValueType is a string and the underlying datatable column is a string. The combox drops down but when an item is selected the cell does not update. If I use only mouse clicks to try to select an item from the combobox, it fails but there is no exception. However, if I then try to type into the combobox field, I get the following exception in the output window:
>
>System.NullReferenceException: Object reference not set to an instance of an object.
>at Syncfusion.Windows.Forms.Grid.GridComboBoxCellModel.GetItemValue(Object dataSource, String valueMember, Object item)
>at Syncfusion.Windows.Forms.Grid.GridComboBoxCellRenderer.OnKeyPress(KeyPressEventArgs e)
>at Syncfusion.Windows.Forms.Grid.GridCellRendererBase.ProcessKeyEventArgs(Message& m)
>at Syncfusion.Windows.Forms.Grid.GridCellRendererBase.RaiseProcessKeyEventArgs(Message& m)
>at Syncfusion.Windows.Forms.Grid.GridTextBoxControl.ProcessKeyMessage(Message& m)
>at System.Windows.Forms.Control.WmKeyChar(Message& m)
>at System.Windows.Forms.Control.WndProc(Message& m)
>at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
>at System.Windows.Forms.RichTextBox.WndProc(Message& m)
>at Syncfusion.Windows.Forms.Grid.GridTextBoxControl.WndProc(Message& msg)
>catched at Syncfusion.Windows.Forms.Grid.GridTextBoxControl
>
>

[Ken Law]

Is it possible that patch version 3.1.0.1 might fix this problem? If so, I''ll have to try that first. I''m under a severe time crunch from my two largest customers and have to continue working on the guts of my application. Also, my project is very large and even if I find the time to come up with a small sample app I''m concerned it may not exhibit the problem. I will try to find the time to do it, but I may have to just work around it somehow.

[Administrator]

If you open a dtrac incident and mention this thread I can send you latest assemblies for shared and grid and then you can check it out before we release a patch.

Stefan

>Is it possible that patch version 3.1.0.1 might fix this problem? If so, I''ll have to try that first. I''m under a severe time crunch from my two largest customers and have to continue working on the guts of my application. Also, my project is very large and even if I find the time to come up with a small sample app I''m concerned it may not exhibit the problem. I will try to find the time to do it, but I may have to just work around it somehow.

[Ken Law]

I have downloaded Beta version 3.1.0.5. This version did fix my immediate problem with comboboxes being unusable.
Thank you!