private void btnReduce_Click(object sender, EventArgs e)
 {
     try
     {
         _dblProp      = _dblProp - 0.02;
         pbScale.Value = Convert.ToInt16(100 * _dblProp);
         _RelativeInterpolationCplLt = CDrawInActiveView.DisplayInterpolations(_DataRecords, _dblProp);
     }
     catch (Exception)
     {
         MessageBox.Show("不能再减小了!");
     }
 }
 private void btnAdd_Click(object sender, EventArgs e)
 {
     _dblProp      = _dblProp + 0.02;
     pbScale.Value = Convert.ToInt16(100 * _dblProp);
     _RelativeInterpolationCplLt = CDrawInActiveView.DisplayInterpolations(_DataRecords, _dblProp);
 }
 private void btnInputedScale_Click(object sender, EventArgs e)
 {
     _dblProp = Convert.ToDouble(this.txtProportion.Text);
     _RelativeInterpolationCplLt = CDrawInActiveView.DisplayInterpolations(_DataRecords, _dblProp);
 }
 private void btn100_Click(object sender, EventArgs e)
 {
     _dblProp = 1;
     _RelativeInterpolationCplLt = CDrawInActiveView.DisplayInterpolations(_DataRecords, _dblProp);
 }