我想在不知道键值的情况下获得modelState中的所有错误消息。循环获取ModelState包含的所有错误消息。
我该怎么做呢?
我想在不知道键值的情况下获得modelState中的所有错误消息。循环获取ModelState包含的所有错误消息。
我该怎么做呢?
当前回答
基于LINQ版本,如果你想将所有错误消息连接到一个字符串中:
string messages = string.Join("; ", ModelState.Values
.SelectMany(x => x.Errors)
.Select(x => x.ErrorMessage));
其他回答
这是对@Dunc的回答的扩展。参见xml文档注释
// ReSharper disable CheckNamespace
using System.Linq;
using System.Web.Mvc;
public static class Debugg
{
/// <summary>
/// This class is for debugging ModelState errors either in the quick watch
/// window or the immediate window.
/// When the model state contains dozens and dozens of properties,
/// it is impossible to inspect why a model state is invalid.
/// This method will pull up the errors
/// </summary>
/// <param name="modelState">modelState</param>
/// <returns></returns>
public static ModelError[] It(ModelStateDictionary modelState)
{
var errors = modelState.Values.SelectMany(x => x.Errors).ToArray();
return errors;
}
}
使用字段名和错误消息获取错误
var errors = new List<ErrorDto>();
foreach (KeyValuePair<string, ModelStateEntry> kvp in context.ModelState)
{
if (kvp.Value.Errors.Count > 0)
{
errors.Add(new ErrorDto()
{
FieldName = kvp.Key,
ErrorMessage = string.Join(",", kvp.Value.Errors.Select(v => v.ErrorMessage))
});
}
}
误差模型
public class ErrorDto
{
public string FieldName { get; set; }
public string ErrorMessage { get; set; }
}
foreach (ModelState modelState in ViewData.ModelState.Values) {
foreach (ModelError error in modelState.Errors) {
DoSomethingWith(error);
}
}
请参见如何在ASP中获取模型状态错误的集合。净MVC ?。
var x = new Dictionary<string,string>();
for (var b = 0; b < ViewData.ModelState.Values.Count(); b++)
{
if (ViewData.ModelState.Values.ElementAt(b).Errors.Count() > 0)
x.Add(ViewData.ModelState.Keys.ElementAt(b), String.Join(",", ViewData
.ModelState.Values.ElementAt(b).Errors.Select(c => c.ErrorMessage)));
}
<div class=“textdanger”样式=“direction:rtl”asp-validation-summary=“All”></div>
简单地使用asp-validation-summary标签助手