/// <summary>
/// When implemented in a class, provides metadata to the model metadata creation process.
/// </summary>
/// <param name="metadata">The model metadata.</param>
public void OnMetadataCreated(ModelMetadata metadata)
{
const string ATTR = "lenrange";
var additionalMetadataValue = new ValidationAttributeMetadata(
new Dictionary <string, string>
{
{ "minlen", MinimumLength.ToString(CultureInfo.InvariantCulture) },
{ "maxlen", MaximumLength.ToString(CultureInfo.InvariantCulture) },
}, ErrorMessageString);
metadata.AdditionalValues.Add(ATTR, additionalMetadataValue);
}
/// <summary>
/// Adds the HTML attributes and styles that need to be rendered for the control to the specified <see cref='System.Web.UI.HtmlTextWriter'/> object.
/// </summary>
/// <param name="writer">An <see cref='System.Web.UI.HtmlTextWriter'/> that represents the output stream to render HTML content on the client.</param>
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
base.AddAttributesToRender(writer);
if (RenderUplevel)
{
string id = ClientID;
HtmlTextWriter expandoAttributeWriter = (EnableLegacyRendering) ? writer : null;
AddExpandoAttribute(expandoAttributeWriter, id, "evaluationfunction", "LengthValidatorEvaluateIsValid", false);
AddExpandoAttribute(expandoAttributeWriter, id, "minimumlength", MinimumLength.ToString());
AddExpandoAttribute(expandoAttributeWriter, id, "minimumerrormessage", MinimumLengthErrorMessage);
AddExpandoAttribute(expandoAttributeWriter, id, "maximumlength", MaximumLength.ToString());
AddExpandoAttribute(expandoAttributeWriter, id, "maximumerrormessage", MaximumLengthErrorMessage);
}
}
private void AnalyzeMetaDescriptionAttribute(HtmlAttribute metaDescriptionAttribute)
{
var descriptionValue = metaDescriptionAttribute.Value;
var resultRule = new ResultRule();
if (string.IsNullOrWhiteSpace(descriptionValue))
{
resultRule.Alias = "no_description_value";
resultRule.Type = ResultType.Error;
}
else
{
descriptionValue = descriptionValue.Trim();
if (descriptionValue.Length > MaximumLength)
{
resultRule.Alias = "description_too_long";
resultRule.Type = ResultType.Warning;
}
if (descriptionValue.Length < MinimumLength)
{
resultRule.Alias = "description_too_short";
resultRule.Type = ResultType.Warning;
}
else if (descriptionValue.Length < AcceptableLength)
{
resultRule.Alias = "description_shorter_then_acceptable";
resultRule.Type = ResultType.Hint;
}
if (descriptionValue.Length <= MaximumLength && descriptionValue.Length >= AcceptableLength)
{
resultRule.Alias = "description_perfect";
resultRule.Type = ResultType.Success;
}
}
resultRule.Tokens.Add(MaximumLength.ToString()); // 0
resultRule.Tokens.Add(MinimumLength.ToString()); // 1
resultRule.Tokens.Add(AcceptableLength.ToString()); // 2
AddResultRule(resultRule);
}
private void AnalyzeTitleTag(HtmlNode titleTag)
{
var titleValue = titleTag.InnerText;
var resultRule = new ResultRule();
if (string.IsNullOrWhiteSpace(titleValue))
{
resultRule.Alias = "no_title_value";
resultRule.Type = ResultType.Error;
}
else
{
titleValue = titleValue.Trim();
if (titleValue.Length > MaximumLength)
{
resultRule.Alias = "title_too_long";
resultRule.Type = ResultType.Warning;
}
if (titleValue.Length < MinimumLength)
{
resultRule.Alias = "title_too_short";
resultRule.Type = ResultType.Hint;
}
if (titleValue.Length <= MaximumLength && titleValue.Length >= MinimumLength)
{
resultRule.Alias = "title_success";
resultRule.Type = ResultType.Success;
}
}
resultRule.Tokens.Add(MaximumLength.ToString()); // 0
resultRule.Tokens.Add(MinimumLength.ToString()); // 1
AddResultRule(resultRule);
}
/// <summary>
/// Applies formatting to a specified error message.
/// </summary>
/// <param name="name">The error message to format.</param>
/// <returns>The formatted error message.</returns>
public override string FormatErrorMessage(string name)
{
return(ErrorMessage.Replace("{0}", MaximumLength.ToString()));
}