Common Scripts

/// <summary>
/// Check if the value is null or DBNull.  The value is often obtained from GetCurrentColumnValue.
/// </summary>
/// <param name="value">the value to check for null</param>
/// <returns></returns>
private static bool IsNull(object value)
{
    if (value == null || value.Equals(System.DBNull.Value)) return true;
    return false;
}

/// <summary>
/// Execute the division and return the result.  If the denominator is zero, return zero.
/// </summary>
/// <param name="n">the nominator value</param>
/// <param name="d">the demoniator value</param>
/// <returns>the result of the division</returns>
private static decimal SafeDiv(decimal n, decimal d)
{
    return AimUtil.SafeDiv(n, d);
}

/// <summary>
/// Get the field value.
/// </summary>
/// <typeparam name="T">the return type</typeparam>
/// <param name="fieldName">the name of the field</param>
/// <returns>Returns the field value.  If the value is null, return the default value for the type</returns>
private T GetFieldValue<T>(string fieldName)
{
    object v = GetCurrentColumnValue(fieldName);
    if (IsNull(v)) return default(T);

    return (T)v;
}

/// <summary>
/// Get the field value from the detail report band.
/// </summary>
/// <typeparam name="T">the return type</typeparam>
/// <param name="detail">the report detail instance</param>
/// <param name="fieldName">the field name</param>
/// <returns>Returns the field value.  If the value is null, return the default value for the type</returns>
private T GetFieldValue<T>(DetailReportBand detail, string fieldName)
{
    object v = detail.GetCurrentColumnValue(fieldName);
    if (IsNull(v)) return default(T);

    return (T)v;
}