我正在尝试实现我自己的RequiredAttribute,其中我调用自定义资源处理程序:
public class LocalizedValidationAttributes
{
public class LocalizedRequiredAttribute : RequiredAttribute
{
private String _resourceString = String.Empty;
public new String ErrorMessage
{
get { return _resourceString; }
set { _resourceString = GetMessageFromResource(value); }
}
}
private static String GetMessageFromResource(String resourceTag)
{
return ResourceManager.Current.GetResourceString(resourceTag);
}
}
我这样调用它:
[LocalizedValidationAttributes.LocalizedRequiredAttribute(ErrorMessage = "test")]
public String Text { get; set; }
但是 ErrorMessage 的 getter 永远不会被调用。
有什么提示吗?谢谢!
最佳答案
尝试这样:
public class LocalizedRequiredAttribute : RequiredAttribute
{
public override string FormatErrorMessage(string name)
{
return ResourceManager.Current.GetResourceString(name);
}
}
或者像这样:
public class LocalizedRequiredAttribute : RequiredAttribute
{
public LocalizedRequiredAttribute(string resourceTag)
{
ErrorMessage = GetMessageFromResource(resourceTag);
}
private static String GetMessageFromResource(String resourceTag)
{
return ResourceManager.Current.GetResourceString(resourceTag);
}
}
然后:
[LocalizedValidationAttributes.LocalizedRequiredAttribute("test")]
public String Text { get; set; }
关于c# - 派生的RequiredAttribute不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/7397774/