/// <summary>
/// Gets a simple display string for the <see cref="ModelExplorer.Model"/> property
/// of <paramref name="modelExplorer"/>.
/// </summary>
/// <param name="modelExplorer">The <see cref="ModelExplorer"/>.</param>
/// <returns>A simple display string for the model.</returns>
public static string GetSimpleDisplayText(this ModelExplorer modelExplorer)
{
if (modelExplorer == null)
{
throw new ArgumentNullException(nameof(modelExplorer));
}
if (modelExplorer.Metadata.SimpleDisplayProperty != null)
{
var propertyExplorer = modelExplorer.GetExplorerForProperty(
modelExplorer.Metadata.SimpleDisplayProperty);
if (propertyExplorer?.Model != null)
{
return(propertyExplorer.Model.ToString());
}
}
if (modelExplorer.Model == null)
{
return(modelExplorer.Metadata.NullDisplayText);
}
var stringResult = Convert.ToString(modelExplorer.Model, CultureInfo.CurrentCulture);
if (stringResult == null)
{
return(string.Empty);
}
if (!stringResult.Equals(modelExplorer.Model.GetType().FullName, StringComparison.Ordinal))
{
return(stringResult);
}
var firstProperty = modelExplorer.Properties.FirstOrDefault();
if (firstProperty == null)
{
return(string.Empty);
}
if (firstProperty.Model == null)
{
return(firstProperty.Metadata.NullDisplayText);
}
return(Convert.ToString(firstProperty.Model, CultureInfo.CurrentCulture));
}
/// <summary>
/// Gets a simple display string for the <see cref="ModelExplorer.Model"/> property
/// of <paramref name="modelExplorer"/>.
/// </summary>
/// <param name="modelExplorer">The <see cref="ModelExplorer"/>.</param>
/// <returns>A simple display string for the model.</returns>
public static string GetSimpleDisplayText(this ModelExplorer modelExplorer)
{
if (modelExplorer == null)
{
throw new ArgumentNullException(nameof(modelExplorer));
}
if (modelExplorer.Metadata.SimpleDisplayProperty != null)
{
var propertyExplorer = modelExplorer.GetExplorerForProperty(
modelExplorer.Metadata.SimpleDisplayProperty);
if (propertyExplorer?.Model != null)
{
return(propertyExplorer.Model.ToString());
}
}
if (modelExplorer.Model == null)
{
return(modelExplorer.Metadata.NullDisplayText);
}
if (modelExplorer.Metadata.IsEnum && modelExplorer.Model is Enum modelEnum)
{
var enumStringValue = modelEnum.ToString("d");
var enumGroupedDisplayNamesAndValues = modelExplorer.Metadata.EnumGroupedDisplayNamesAndValues;
Debug.Assert(enumGroupedDisplayNamesAndValues != null);
foreach (var kvp in enumGroupedDisplayNamesAndValues)
{
if (string.Equals(kvp.Value, enumStringValue, StringComparison.Ordinal))
{
return(kvp.Key.Name);
}
}
}
var stringResult = Convert.ToString(modelExplorer.Model, CultureInfo.CurrentCulture);
if (stringResult == null)
{
return(string.Empty);
}
if (!stringResult.Equals(modelExplorer.Model.GetType().FullName, StringComparison.Ordinal))
{
return(stringResult);
}
var firstProperty = modelExplorer.Properties.FirstOrDefault();
if (firstProperty == null)
{
return(string.Empty);
}
if (firstProperty.Model == null)
{
return(firstProperty.Metadata.NullDisplayText);
}
return(Convert.ToString(firstProperty.Model, CultureInfo.CurrentCulture));
}