public string this[string columnName]
{
get
{
switch (columnName)
{
case nameof(Name):
if (string.IsNullOrWhiteSpace(Name))
{
return("Required");
}
if (ValidationUtilities.ValidateName(Name) != null)
{
return("Must be a valid identifier");
}
if (Name.StartsWith(" "))
{
return("Can't start with a space");
}
if (Name.EndsWith(" "))
{
return("Can't end with a space");
}
if (_existingNames != null && _existingNames.Any(s => string.Equals(s, Name, StringComparison.OrdinalIgnoreCase)))
{
return("Duplicated name");
}
return(null);
case nameof(SelectedFieldType):
if (SelectedFieldType == null)
{
return("Required");
}
return(null);
case nameof(Prompt):
if (string.IsNullOrWhiteSpace(Prompt))
{
return("Required");
}
if (ValidationUtilities.ValidateFieldPrompt(Prompt) != null)
{
return("Cannot end in a colon or space");
}
return(null);
}
return(null);
}
}