我有一个不发回错误消息的RequiredAttribute 扩展类。如果我在调试器中检查它,文本就在那里。
public class VierRequired : RequiredAttribute
{
public VierRequired(string controlName)
{
//...
}
public string VierErrorMessage
{
get { return ErrorMessage; }
set { ErrorMessage = value; }
}
// validate true if there is any data at all in the object
public override bool IsValid(object value)
{
if (value != null && !string.IsNullOrEmpty(value.ToString()))
return true;
return false; // base.IsValid(value);
}
}
我这样称呼它
[VierRequired("FirstName", VierErrorMessage = "Please enter your first name")]
public string FirstName { get; set; }
和 mvc 视图
<%: Html.TextBoxFor(model => model.FirstName, new { @class = "formField textBox" })%>
<%: Html.ValidationMessageFor(model => model.FirstName)%>
如果我使用正常的必需注释,它会起作用
[Required(ErrorMessage = "Please enter your name")]
public string FirstName { get; set; }
但是自定义不会发回任何错误消息