51 lines
2.5 KiB
C#
51 lines
2.5 KiB
C#
namespace System.Web.ModelBinding {
|
|
using System;
|
|
using System.ComponentModel.DataAnnotations;
|
|
using System.Globalization;
|
|
using System.Reflection;
|
|
|
|
public class DataAnnotationsModelMetadata : ModelMetadata {
|
|
private DisplayColumnAttribute _displayColumnAttribute;
|
|
|
|
public DataAnnotationsModelMetadata(DataAnnotationsModelMetadataProvider provider, Type containerType,
|
|
Func<object> modelAccessor, Type modelType, string propertyName,
|
|
DisplayColumnAttribute displayColumnAttribute)
|
|
: base(provider, containerType, modelAccessor, modelType, propertyName) {
|
|
_displayColumnAttribute = displayColumnAttribute;
|
|
}
|
|
|
|
protected override string GetSimpleDisplayText() {
|
|
if (Model != null) {
|
|
if (_displayColumnAttribute != null && !String.IsNullOrEmpty(_displayColumnAttribute.DisplayColumn)) {
|
|
PropertyInfo displayColumnProperty = ModelType.GetProperty(_displayColumnAttribute.DisplayColumn, BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance);
|
|
ValidateDisplayColumnAttribute(_displayColumnAttribute, displayColumnProperty, ModelType);
|
|
|
|
object simpleDisplayTextValue = displayColumnProperty.GetValue(Model, new object[0]);
|
|
if (simpleDisplayTextValue != null) {
|
|
return simpleDisplayTextValue.ToString();
|
|
}
|
|
}
|
|
}
|
|
|
|
return base.GetSimpleDisplayText();
|
|
}
|
|
|
|
private static void ValidateDisplayColumnAttribute(DisplayColumnAttribute displayColumnAttribute, PropertyInfo displayColumnProperty, Type modelType) {
|
|
if (displayColumnProperty == null) {
|
|
throw new InvalidOperationException(
|
|
String.Format(
|
|
CultureInfo.CurrentCulture,
|
|
SR.GetString(SR.DataAnnotationsModelMetadataProvider_UnknownProperty),
|
|
modelType.FullName, displayColumnAttribute.DisplayColumn));
|
|
}
|
|
if (displayColumnProperty.GetGetMethod() == null) {
|
|
throw new InvalidOperationException(
|
|
String.Format(
|
|
CultureInfo.CurrentCulture,
|
|
SR.GetString(SR.DataAnnotationsModelMetadataProvider_UnreadableProperty),
|
|
modelType.FullName, displayColumnAttribute.DisplayColumn));
|
|
}
|
|
}
|
|
}
|
|
}
|