SharpDevelop Community

There's a problem adding the DataSet-Component in Design-Mode with #D up to Build 531. The following error occurs if you try to add it to the form:

.NET Version         : 2.0.50215.44
OS Version           : Microsoft Windows NT 5.1.2600 Service Pack 2
Boot Mode            : Normal
Working Set Memory   : 91532kb
SharpDevelop Version : 2.0.0.531

Failed to create component 'DataSet'.  The error message follows:
 'System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.VSDesigner.Data.VS.DataSetDesigner.Initialize(IComponent component)
   at System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent component, String name, IContainer containerToAddTo)
   at System.ComponentModel.Design.DesignerHost.Add(IComponent component, String name)
   at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType, String name)
   at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType)
   at System.Drawing.Design.ToolboxItem.CreateComponentsCore(IDesignerHost host)
   at System.Drawing.Design.ToolboxItem.CreateComponentsCore(IDesignerHost host, IDictionary defaultValues)
   at System.Drawing.Design.ToolboxItem.CreateComponents(IDesignerHost host, IDictionary defaultValues)
   at System.Windows.Forms.Design.OleDragDropHandler.Creat...'
Exception thrown:
System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.VSDesigner.Data.VS.DataSetDesigner.Initialize(IComponent component)
   at System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent component, String name, IContainer containerToAddTo)
   at System.ComponentModel.Design.DesignerHost.Add(IComponent component, String name)
   at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType, String name)
   at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType)
   at System.Drawing.Design.ToolboxItem.CreateComponentsCore(IDesignerHost host)
   at System.Drawing.Design.ToolboxItem.CreateComponentsCore(IDesignerHost host, IDictionary defaultValues)
   at System.Drawing.Design.ToolboxItem.CreateComponents(IDesignerHost host, IDictionary defaultValues)
   at System.Windows.Forms.Design.OleDragDropHandler.CreateTool(ToolboxItem tool, Control parent, Int32 x, Int32 y, Int32 width, Int32 height, Boolean hasLocation, Boolean hasSize, ToolboxSnapDragDropEventArgs e)

I think Dataset designer attribute has private accessor. I use Binding source designer attribute below

[Designer("System.Windows.Forms.Design.BindingSourceDesigner, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public partial class myDataSet : System.Data.DataSet {.................

This is usefull. Add this attribute befor class definition. This class (derived dataset) now can be added any form or control at design time...

Note: I create this myDataSet C# code using XSD.exe tool. For Example I create a untyped dataset with SQL clause(at runtime). I fill it and then save its Schema. then at runtime, use XSD.exe tool and create this yourPrivateTypedDataSet's C# Code. and now again build it and use new typed dataset...

(For building at runtime you can write code same below

CSharpCodeProvider csCompiler = new CSharpCodeProvider();

ICodeCompiler iCodeCompiler = csCompiler.CreateCompiler();
....... //out location
.......// Add assemblies etc...
CompilerResults cResult = iCodeCompiler.CompileAssemblyFromSource(compilerParams, source);
) 

If you have any questions write me please... tugrul.karakaya@gmail.com