private void LoadQualityLimits() { this.textBoxHigh.Text = ""; this.textBoxLow.Text = ""; var quality_row = m_quality.GetRow(m_series.Table.TableName); if (quality_row != null) { if (!quality_row.IshighNull()) { this.textBoxHigh.Text = quality_row.high.ToString("F2"); } if (!quality_row.IslowNull()) { this.textBoxLow.Text = quality_row.low.ToString("F2"); } } }