/// <summary>
/// Try and convert the value of a term to type T
/// </summary>
/// <typeparam name="T">Type to convert to</typeparam>
/// <param name="row">A row object</param>
/// <param name="term">The name of the term to convert</param>
/// <param name="value">Value to return</param>
/// <returns>A ConvertResult object that is true on success. On failure will return false an contain an error message</returns>
public static ConvertResult TryConvert <T>(this IRow row, string term, out T value)
{
if (!row.TryGetField(term, out string data))
{
value = default;
return(ConvertResult.Failed($"Term {term} not found"));
}
var converter = System.ComponentModel.TypeDescriptor.GetConverter(typeof(T));
if (!converter.IsValid(data))
{
value = default;
return(ConvertResult.Failed($"Term {term} with value {data ?? "(null)"} could not be converted to type {typeof(T)}"));
}
value = (T)converter.ConvertFrom(data);
return(ConvertResult.Success);
}
/// <summary>
/// Try and convert the value of a term to type T
/// </summary>
/// <typeparam name="T">Type to convert to</typeparam>
/// <param name="row">A row object</param>
/// <param name="index">The index of the field to convert</param>
/// <param name="value">Value to return</param>
/// <returns>A ConvertResult object that is true on success. On failure will return false an contain an error message</returns>
public static ConvertResult TryConvert <T>(this IRow row, int index, out T value)
{
if (index < 0 || index >= row.FieldMetaData.Length)
{
value = default;
return(ConvertResult.Failed($"Index {index} out of range"));
}
string data = row[index];
var converter = System.ComponentModel.TypeDescriptor.GetConverter(typeof(T));
if (!converter.IsValid(data))
{
value = default;
return(ConvertResult.Failed($"Field at index {index} with value {data ?? "(null)"} could not be converted to type {typeof(T)}"));
}
value = (T)converter.ConvertFrom(data);
return(ConvertResult.Success);
}
