blocks|key|3127225|text|<%25+ViewData.ModelState.IsValid+%25>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3127226|或|unstyled|3127227|<%25+ViewData.ModelState.Values.Any(x+=>+x.Errors.Count+>=+1)+%25>|3127228|对于特定的属性..。|3127229|<%25+ViewData.ModelState["Property"].Errors+%25>+//+Note+this+returns+a+collection|3127230|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|M|3|-4|5|F|7|T|8|@]|9|@]|A|$]]]|N|$]]

<pre><code>&lt;% ViewData.ModelState.IsValid %&gt;
</code></pre>

or

<pre><code>&lt;% ViewData.ModelState.Values.Any(x =&gt; x.Errors.Count &gt;= 1) %&gt;
</code></pre>

and for a specific property...

<pre><code>&lt;% ViewData.ModelState["Property"].Errors %&gt; // Note this returns a collection
</code></pre>

blocks|key|348729|text|谢谢查德！为了显示与键相关的所有错误，下面是我想出的方法。由于某些原因，基本Html.ValidationMessage帮助器只显示与键相关的第一个错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|348730|++++<%25=+Html.ShowAllErrors(mykey)+%25>|code-block|syntax|javascript|348731|HtmlHelper：|348732|++++public+static+String+ShowAllErrors(this+HtmlHelper+helper,+String+key)+{
++++++++StringBuilder+sb+=+new+StringBuilder();
++++++++if+(helper.ViewData.ModelState[key]+!=+null)+{
++++++++++++foreach+(var+e+in+helper.ViewData.ModelState[key].Errors)+{
++++++++++++++++TagBuilder+div+=+new+TagBuilder("div");
++++++++++++++++div.MergeAttribute("class",+"field-validation-error");
++++++++++++++++div.SetInnerText(e.ErrorMessage);
++++++++++++++++sb.Append(div.ToString());
++++++++++++}
++++++++}
++++++++return+sb.ToString();
++++}|348733|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Thanks Chad! To show all the errors associated with the key, here's what I came up with. For some reason the base Html.ValidationMessage helper only shows the first error associated with the key.

<pre><code> &lt;%= Html.ShowAllErrors(mykey) %&gt;
</code></pre>

HtmlHelper:

<pre><code> public static String ShowAllErrors(this HtmlHelper helper, String key) {
 StringBuilder sb = new StringBuilder();
 if (helper.ViewData.ModelState[key] != null) {
 foreach (var e in helper.ViewData.ModelState[key].Errors) {
 TagBuilder div = new TagBuilder("div");
 div.MergeAttribute("class", "field-validation-error");
 div.SetInnerText(e.ErrorMessage);
 sb.Append(div.ToString());
 }
 }
 return sb.ToString();
 }
</code></pre>

blocks|key|352366|text|要仅从ModelState获取错误，请使用此Linq：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|352367|var+modelStateErrors+=+this.ModelState.Keys.SelectMany(key+=>+this.ModelState[key].Errors);|code-block|syntax|javascript|352368|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To just get the errors from the ModelState, use this Linq:

<pre><code>var modelStateErrors = this.ModelState.Keys.SelectMany(key =&gt; this.ModelState[key].Errors);
</code></pre>

blocks|key|349642|text|如果你不知道是什么属性导致了这个错误，你可以使用反射遍历所有的属性：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|349643|public+static+String+ShowAllErrors<T>(this+HtmlHelper+helper)+{
++++StringBuilder+sb+=+new+StringBuilder();
++++Type+myType+=+typeof(T);
++++PropertyInfo[]+propInfo+=+myType.GetProperties();

++++foreach+(PropertyInfo+prop+in+propInfo)+{
++++++++foreach+(var+e+in+helper.ViewData.ModelState[prop.Name].Errors)+{
++++++++++++TagBuilder+div+=+new+TagBuilder("div");
++++++++++++div.MergeAttribute("class",+"field-validation-error");
++++++++++++div.SetInnerText(e.ErrorMessage);
++++++++++++sb.Append(div.ToString());
++++++++}
++++}
++++return+sb.ToString();
}|code-block|syntax|javascript|349644|其中T是您的"ViewModel“的类型。|349645|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you don't know what property caused the error, you can, using reflection, loop over all properties:

<pre><code>public static String ShowAllErrors&lt;T&gt;(this HtmlHelper helper) {
 StringBuilder sb = new StringBuilder();
 Type myType = typeof(T);
 PropertyInfo[] propInfo = myType.GetProperties();

 foreach (PropertyInfo prop in propInfo) {
 foreach (var e in helper.ViewData.ModelState[prop.Name].Errors) {
 TagBuilder div = new TagBuilder("div");
 div.MergeAttribute("class", "field-validation-error");
 div.SetInnerText(e.ErrorMessage);
 sb.Append(div.ToString());
 }
 }
 return sb.ToString();
}
</code></pre>

Where T is the type of your "ViewModel".

blocks|key|352380|text|@ChrisMcKenzie's+answer的精简版本|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|352381|var+modelStateErrors+=+this.ModelState.Values.SelectMany(m+=>+m.Errors);|code-block|syntax|javascript|352382|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/3459569/62600^0|0|N|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Condensed version of <a href="https://stackoverflow.com/a/3459569/62600">@ChrisMcKenzie's answer</a>:

<pre><code>var modelStateErrors = this.ModelState.Values.SelectMany(m =&gt; m.Errors);
</code></pre>

blocks|key|347292|text|这将为您提供一个包含所有错误的字符串，并用逗号分隔|type|unstyled|depth|inlineStyleRanges|entityRanges|data|347293|string+validationErrors+=+string.Join(",",
++++++++++++++++++++ModelState.Values.Where(E+=>+E.Errors.Count+>+0)
++++++++++++++++++++.SelectMany(E+=>+E.Errors)
++++++++++++++++++++.Select(E+=>+E.ErrorMessage)
++++++++++++++++++++.ToArray());|code-block|syntax|javascript|347294|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This will give you one string with all the errors with comma separating 

<pre><code>string validationErrors = string.Join(",",
 ModelState.Values.Where(E =&gt; E.Errors.Count &gt; 0)
 .SelectMany(E =&gt; E.Errors)
 .Select(E =&gt; E.ErrorMessage)
 .ToArray());
</code></pre>

blocks|key|3127462|text|这是VB。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3127463|Dim+validationErrors+As+String+=+String.Join(",",+ModelState.Values.Where(Function(E)+E.Errors.Count+>+0).SelectMany(Function(E)+E.Errors).[Select](Function(E)+E.ErrorMessage).ToArray())|code-block|syntax|javascript|3127464|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is the VB.

<pre><code>Dim validationErrors As String = String.Join(",", ModelState.Values.Where(Function(E) E.Errors.Count &gt; 0).SelectMany(Function(E) E.Errors).[Select](Function(E) E.ErrorMessage).ToArray())
</code></pre>

blocks|key|349710|text|将上面的几个答案放在一起，这是我最终使用的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|349711|var+validationErrors+=+ModelState.Values.Where(E+=>+E.Errors.Count+>+0)
++++.SelectMany(E+=>+E.Errors)
++++.Select(E+=>+E.ErrorMessage)
++++.ToList();|code-block|syntax|javascript|349712|validationErrors最终成为一个包含每个错误消息的List<string>。在此基础上，您可以轻松地使用该列表执行您想要的操作。|offset|length|style|CODE|349713|​|349714|📷|atomic|349715|349716|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/61ccf0f3bcaaa36144f46207022bd1a2.png|imageAlt^0|0|0|0|G|V|C|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|13|8|@$I|14|J|15|K|L]|$I|16|J|17|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|18|8|@]|9|@]|A|$]]|$1|O|3|P|5|Q|7|19|8|@]|9|@$I|1A|J|1B|1|1C]]|A|$]]|$1|R|3|N|5|6|7|1D|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z|10|-4]]]]

Putting together several answers from above, this is what I ended up using:

<pre><code>var validationErrors = ModelState.Values.Where(E =&gt; E.Errors.Count &gt; 0)
 .SelectMany(E =&gt; E.Errors)
 .Select(E =&gt; E.ErrorMessage)
 .ToList();
</code></pre>

<code>validationErrors</code> ends up being a <code>List&lt;string&gt;</code> that contains each error message. From there, it's easy to do what you want with that list.

<a href="https://i.stack.imgur.com/RYwes.png" rel="noreferrer"><img src="https://i.stack.imgur.com/RYwes.png" alt="enter image description here"></a>

blocks|key|347322|text|这是从BrockAllen的答案中得到的，它对我有效，它显示了有错误的键：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|347323|++++var+errors+=
++++from+item+in+ModelState
++++where+item.Value.Errors.Count+>+0
++++select+item.Key;
++++var+keys+=+errors.ToArray();|code-block|syntax|javascript|347324|来源：https://forums.asp.net/t/1805163.aspx?Get%2Bthe%2BKey%2Bvalue%2Bof%2Bthe%2BModel%2Berror|offset|length|347325|entityMap|0|LINK|mutability|MUTABLE|url|https://forums.asp.net/t/1805163.aspx?Get%2520the%2520Key%2520value%2520of%2520the%2520Model%2520error^0|0|0|3|22|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Got this from BrockAllen's answer that worked for me, it displays the keys that have errors:
<pre><code> var errors =
 from item in ModelState
 where item.Value.Errors.Count &gt; 0
 select item.Key;
 var keys = errors.ToArray();
</code></pre>
Source: <a href="https://forums.asp.net/t/1805163.aspx?Get%20the%20Key%20value%20of%20the%20Model%20error" rel="nofollow noreferrer">https://forums.asp.net/t/1805163.aspx?Get+the+Key+value+of+the+Model+error</a>

How do I get the collection of errors in a view?
I don't want to use the Html Helper Validation Summary or Validation Message. Instead I want to check for errors and if any display them in specific format. Also on the input controls I want to check for a specific property error and add a class to the input.
P.S. I'm using the Spark View Engine but the idea should be the same.
So I figured I could do something like...
<pre><code>&lt;if condition=&quot;${ModelState.Errors.Count &gt; 0}&quot;&gt;
 DisplayErrorSummary()
&lt;/if&gt;

....and also...

&lt;input type=&quot;text&quot; value=&quot;${Model.Name}&quot; 
 class=&quot;?{ModelState.Errors[&quot;Name&quot;] != string.empty} error&quot; /&gt;

....
</code></pre>
Or something like that.
UPDATE
My final solution looked like this:
<pre><code>&lt;input type=&quot;text&quot; value=&quot;${ViewData.Model.Name}&quot; 
 class=&quot;text error?{!ViewData.ModelState.IsValid &amp;&amp; 
 ViewData.ModelState[&quot;Name&quot;].Errors.Count() &gt; 0}&quot; 
 id=&quot;Name&quot; name=&quot;Name&quot; /&gt;
</code></pre>
This only adds the error css class if this property has an error.

How do I get the collection of Model State Errors in ASP.NET MVC?

Spark 

如何在视图中获取错误集合？我不想使用Html帮助程序验证摘要或验证消息。相反，我希望检查错误，如果有错误，则以特定格式显示它们。另外，在输入控件上，我希望检查特定的属性错误，并向输入添加一个类。附言:我使用的是Spark View引擎，但想法应该是一样的。所以我想我可以做一些像这样的事情。<if condition="...

问如何在ASP.NET MVC中获取模型状态错误的集合？
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