AnimatGuiCtrls.Controls.PropertySlider.ctrlSlider_Scroll C# (CSharp) Method

        protected void ctrlSlider_Scroll(object sender, System.EventArgs e)
        {
            try
            {
                if(m_PropertySpec != null)
                {
                    double dblVal = CalculateValueFromSlider();

                    PropertySpecEventArgs args = new PropertySpecEventArgs(m_PropertySpec, Convert.ChangeType(dblVal, Type.GetType(m_PropertySpec.TypeName)));
                    OnSetValue(args);
                    txtValue.Text = dblVal.ToString();

                    m_dblCurrentValue = dblVal;
                }
            }
            catch(System.Exception ex)
            {
                string strVal = ex.Message; //Freaking error CS0168
                //System.Windows.Forms.MessageBox.Show(this, ex.Message, "Slider Error", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);
            }
        }