Calling vtkParametricFunction from kitware.VTK

[SabariSankar]

Hi All,

I need to draw a nurb curve using vtkParametricFunction in c#

I created new class for draw a nurb curve by inheriting vtkParametricFunction .

Initially create the constructor I am facing issues mentioned below ::

i)An unhandled exception of type 'System.AccessViolationException' occurred in modeling.dll
Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Code below :

public wrapperparametricfunction()
: base(IntPtr.Zero, false, false)
{
uint mteStatus = 0;
uint maxValue = uint.MaxValue;
uint rawRefCount = 0;

// error occured in below function in c#
IntPtr rawCppThis = vtkParametricFunction_NewInstance_26(CppThis, ref mteStatus, ref maxValue, ref rawRefCount);
base.SetCppThis(rawCppThis, true, (mteStatus != 0) && (rawRefCount >= 2));
}

Please do the needful to proceed further.
Thanks in advance