private void ReleaseAxControl()
{
this.NoComponentChangeEvents++;
ContainerControl containingControl = this.ContainingControl;
if (containingControl != null)
{
containingControl.VisibleChanged -= this.onContainerVisibleChanged;
}
try
{
if (this.instance != null)
{
Marshal.FinalReleaseComObject(this.instance);
this.instance = null;
this.iOleInPlaceObject = null;
this.iOleObject = null;
this.iOleControl = null;
this.iOleInPlaceActiveObject = null;
this.iOleInPlaceActiveObjectExternal = null;
this.iPerPropertyBrowsing = null;
this.iCategorizeProperties = null;
this.iPersistStream = null;
this.iPersistStreamInit = null;
this.iPersistStorage = null;
}
this.axState[checkedIppb] = false;
this.axState[checkedCP] = false;
this.axState[disposed] = true;
this.freezeCount = 0;
this.axState[sinkAttached] = false;
this.wndprocAddr = IntPtr.Zero;
this.SetOcState(0);
}
finally
{
this.NoComponentChangeEvents--;
}
}
private System.Windows.Forms.NativeMethods.ICategorizeProperties GetCategorizeProperties()
{
if (((this.iCategorizeProperties == null) && !this.axState[checkedCP]) && (this.instance != null))
{
this.axState[checkedCP] = true;
if (this.instance is System.Windows.Forms.NativeMethods.ICategorizeProperties)
{
this.iCategorizeProperties = (System.Windows.Forms.NativeMethods.ICategorizeProperties) this.instance;
}
}
return this.iCategorizeProperties;
}