protected virtual string GenerateValue(string expression, object value, string format, bool useViewData)
{
var fullName = DefaultHtmlGenerator.GetFullHtmlFieldName(ViewContext, expression);
var attemptedValue =
(string)DefaultHtmlGenerator.GetModelStateValue(ViewContext, fullName, typeof(string));
string resolvedValue;
if (attemptedValue != null)
{
// case 1: if ModelState has a value then it's already formatted so ignore format string
resolvedValue = attemptedValue;
}
else if (useViewData)
{
// case 2: format the value from ViewData
resolvedValue = DefaultHtmlGenerator.EvalString(ViewContext, expression, format);
}
else
{
// case 3: format the explicit value from ModelMetadata
resolvedValue = FormatValue(value, format);
}
return(resolvedValue);
}
protected virtual string GenerateId(string expression)
{
var fullName = DefaultHtmlGenerator.GetFullHtmlFieldName(ViewContext, expression: expression);
var id = TagBuilder.CreateSanitizedId(fullName, IdAttributeDotReplacement);
return(id);
}
protected virtual string GenerateValue(string name, object value, string format, bool useViewData)
{
var fullName = DefaultHtmlGenerator.GetFullHtmlFieldName(ViewContext, name);
var attemptedValue =
(string)DefaultHtmlGenerator.GetModelStateValue(ViewContext, fullName, typeof(string));
string resolvedValue;
if (attemptedValue != null)
{
// case 1: if ModelState has a value then it's already formatted so ignore format string
resolvedValue = attemptedValue;
}
else if (useViewData)
{
if (string.IsNullOrEmpty(name))
{
// case 2(a): format the value from ModelMetadata for the current model
var metadata = ViewData.ModelMetadata;
resolvedValue = FormatValue(metadata.Model, format);
}
else
{
// case 2(b): format the value from ViewData
resolvedValue = DefaultHtmlGenerator.EvalString(ViewContext, name, format);
}
}
else
{
// case 3: format the explicit value from ModelMetadata
resolvedValue = FormatValue(value, format);
}
return(resolvedValue);
}
protected virtual string GenerateName(string expression)
{
var fullName = DefaultHtmlGenerator.GetFullHtmlFieldName(ViewContext, expression);
return(fullName);
}
