UIAutomation.HasControlInputCmdletBase.CheckAndPrepareInput C# (CSharp) Method

        internal bool CheckAndPrepareInput(HasControlInputCmdletBase cmdlet)
        {
            bool result = false;
            
            if (null == cmdlet.InputObject) {
                
                WriteVerbose(cmdlet, "[checking the input] Control(s) are null");
                
                cmdlet.WriteError(
                    cmdlet,
                    "The pipeline input is null",
                    "InputIsNull",
                    ErrorCategory.InvalidArgument,
                    true);
                
            }
            
            foreach (var inputObject in cmdlet.InputObject) {
                
                if (null == inputObject) {
                    
                    WriteVerbose(cmdlet, "[checking the input] Control is null");
                    if (PassThru) {
                        
                        WriteObject(this, inputObject);
                    } else {
                        
                        result = false;
                        WriteObject(this, result);
                    }
                    
                    result = false;
                    
                    cmdlet.WriteError(
                        cmdlet,
                        "A part of the pipeline input is null",
                        "PartOfInputIsNull",
                        ErrorCategory.InvalidArgument,
                        false);
                    
                }
                
                // 20131109
                //System.Windows.Automation.AutomationElement _control = null;
                //IUiElement _controlAdapter = null;
                var _controlAdapter = inputObject;
                
                try {
                    
                    // 20131109
                    //_control = 
                    //    (AutomationElement)inputObject;
                    
                    // 20131109
//                    this.WriteVerbose(
//                        cmdlet,
//                        "[checking the input] the input control is of the " +
//                        inputObject.Current.ControlType.ProgrammaticName +
//                        " type");
                    
                    // 20131109
                    //cmdlet.currentWindow = _control;
                    //if (inputObject is IUiElement) {
                    if (null != (inputObject as IUiElement))
                    {
                    /*
                    if (inputObject is IUiElement) {
                    */
                        cmdlet.CurrentInputElement = (IUiElement)_controlAdapter;
                    }
//                    if (inputObject is AutomationElement) {
//                        cmdlet.currentWindow = new UiElement((AutomationElement)inputObject);
//                    }
                    
                    result = true;
                    
                    // there's no need to output the True value
                    // since the output will be what we want 
                    // (some part of AutomationElement, as an example)
                } catch (Exception) {
                    
                    if (PassThru) {
                        
                        // 20131109
                        //WriteObject(this, _control);
                        WriteObject(this, _controlAdapter);
                        
                    } else {
                        
                        result = false;
                        WriteObject(this, result);
                        
                    }
                    result = false;
                    return result;
                }
            
            } // 20120823
            
            return result;
        }