C#

private void freezeFrame_MouseClick(object sender, MouseEventArgs e)
   {


       txtMouseX.Text = e.X.ToString();
       txtMouseY.Text = e.Y.ToString();

       getPixel();



   }



   private void getPixel()
   {
       int rangeLimit = 20;
       int mouseX = int.Parse(txtMouseX.Text);
       int mouseY = int.Parse(txtMouseY.Text);
       Bitmap refBitmap = null;
       System.Drawing.Image refImage = null;
       refImage = freezeFrame.Image;
       refBitmap = new Bitmap(refImage);

       Color currentPixel = (refBitmap.GetPixel(mouseX, mouseY));

       curPixelRed.Text = currentPixel.R.ToString();
       curPixelGreen.Text = currentPixel.G.ToString();
       curPixelBlue.Text = currentPixel.B.ToString();

       redMinUpDown.Value = currentPixel.R - rangeLimit;
       redMaxUpDown.Value = currentPixel.R + rangeLimit;

       greenMinUpDown.Value = currentPixel.G - rangeLimit;
       greenMaxUpDown.Value = currentPixel.G + rangeLimit;

       blueMinUpDown.Value = currentPixel.B - rangeLimit;
       blueMaxUpDown.Value = currentPixel.B + rangeLimit;

   }

bool ReadIni()
        {
            try
            {
                string error = "";
                try
                {
                    //read ini from file
                }
                catch (Exception ex)
                {
                    //show error message, but continue because the user is promtped to input the 
                    //values manually and file will be created.
                }

                if (ini != null) //ini is a string array filled with the content of the ini file
                {
                    //parse values from ini and store sucess in an array
                    //write error message to string error
                }
                else
                {
                    for (int i = 0; i < 5; i++)
                    {
                        conversion[i] = false; //set all bools in the array to false
                    }
                }
                //this part seems throw the error
                if (error != "" || ini == null)
                {
                    //show error message
                    MessageBox.Show(error + "\r\nPlease input the missing values", "Input missing 
                    values", MessageBoxButtons.OK, MessageBoxIcon.Error);

                    //initialize F_Manual_Input with array       //bool       int     string 
                    F_Manual_Input forminput = new F_Manual_Input(conversion, values, inipath);
                    this.Show(); //show this form as first as "background" starting up
                    forminput.ShowDialog();
                    //set map and tile size with manually input values 
                    this.mapsize = new Size(forminput.MapWidth, forminput.MapHeight);
                    this.tilewidth = forminput.TileWidth;
                    this.tileheight = forminput.TileHeight;

                    return false; //values had to be manually input
                }
                else
                {
                    //set map/tile size and image width with values from file
                    this.mapsize = new Size(sizeX, sizeY);
                    this.tilewidth = tileX;
                    this.tileheight = tileY;
                    this.imagewidth = sourceX;

                    return true; //input was read from file
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("An error occurred while reading the ini file:\r\n" + ex.Message,
                    "System Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }