blocks|key|274036|text|可能的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|274037|++++propertyType+=+propertyInfo[propertyInfoIndex].PropertyType;
++++if+(propertyType.IsGenericType+&&
++++++++propertyType.GetGenericTypeDefinition()+==+typeof(Nullable<>))
++++{
++++++propertyType+=+propertyType.GetGenericArguments()[0];
++++}|code-block|syntax|javascript|274038|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|$]]

possible solution:

<pre><code> propertyType = propertyInfo[propertyInfoIndex].PropertyType;
 if (propertyType.IsGenericType &amp;&amp;
 propertyType.GetGenericTypeDefinition() == typeof(Nullable&lt;&gt;))
 {
 propertyType = propertyType.GetGenericArguments()[0];
 }
</code></pre>

blocks|key|274040|text|Nullable.GetUnderlyingType(fi.FieldType)将为你做这些工作，检查下面的代码来做你想做的事情|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|274041|System.Reflection.FieldInfo[]+fieldsInfos+=+typeof(NullWeAre).GetFields();

++++++++foreach+(System.Reflection.FieldInfo+fi+in+fieldsInfos)
++++++++{
++++++++++++if+(fi.FieldType.IsGenericType
++++++++++++++++&&+fi.FieldType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
++++++++++++{
++++++++++++++++//+We+are+dealing+with+a+generic+type+that+is+nullable
++++++++++++++++Console.WriteLine("Name:+{0},+Type:+{1}",+fi.Name,+Nullable.GetUnderlyingType(fi.FieldType));
++++++++++++}

++++}|code-block|syntax|javascript|274042|entityMap^0|0|14|0|14|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|S|8|@]|E|@]|F|$J|K]]|$1|L|3|-4|5|6|7|T|8|@]|E|@]|F|$]]]|M|$]]

<code>Nullable.GetUnderlyingType(fi.FieldType)</code> will do the work for you check below code for do the thing you want

<pre><code>System.Reflection.FieldInfo[] fieldsInfos = typeof(NullWeAre).GetFields();

 foreach (System.Reflection.FieldInfo fi in fieldsInfos)
 {
 if (fi.FieldType.IsGenericType
 &amp;&amp; fi.FieldType.GetGenericTypeDefinition().Equals(typeof(Nullable&lt;&gt;)))
 {
 // We are dealing with a generic type that is nullable
 Console.WriteLine("Name: {0}, Type: {1}", fi.Name, Nullable.GetUnderlyingType(fi.FieldType));
 }

 }
</code></pre>

blocks|key|272493|text|foreach+(var+info+in+typeof(T).GetProperties())
{
++var+type+=+info.PropertyType;
++var+underlyingType+=+Nullable.GetUnderlyingType(type);
++var+returnType+=+underlyingType+??+type;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|272494|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>foreach (var info in typeof(T).GetProperties())
{
 var type = info.PropertyType;
 var underlyingType = Nullable.GetUnderlyingType(type);
 var returnType = underlyingType ?? type;
}
</code></pre>

blocks|key|2974215|text|我正在使用一个循环来遍历所有的类属性来获取属性类型。我使用以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2974216|public+Dictionary<string,+string>+GetClassFields(TEntity+obj)
{
++++Dictionary<string,+string>+dctClassFields+=+new+Dictionary<string,+string>();

++++foreach+(PropertyInfo+property+in+obj.GetType().GetProperties())
++++{
++++++++if+(property.PropertyType.IsGenericType+&&+property.PropertyType.GetGenericTypeDefinition()+==+typeof(Nullable<>)+&&+property.PropertyType.GetGenericArguments().Length+>+0)
++++++++++++dctClassFields.Add(property.Name,+property.PropertyType.GetGenericArguments()[0].FullName);
++++++++else
++++++++++++dctClassFields.Add(property.Name,+property.PropertyType.FullName);
++++}

++++return+dctClassFields;
}|code-block|syntax|javascript|2974217|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|$]]

I am using a loop to go through all class properties to get the property type. I use the following code:

<pre><code>public Dictionary&lt;string, string&gt; GetClassFields(TEntity obj)
{
 Dictionary&lt;string, string&gt; dctClassFields = new Dictionary&lt;string, string&gt;();

 foreach (PropertyInfo property in obj.GetType().GetProperties())
 {
 if (property.PropertyType.IsGenericType &amp;&amp; property.PropertyType.GetGenericTypeDefinition() == typeof(Nullable&lt;&gt;) &amp;&amp; property.PropertyType.GetGenericArguments().Length &gt; 0)
 dctClassFields.Add(property.Name, property.PropertyType.GetGenericArguments()[0].FullName);
 else
 dctClassFields.Add(property.Name, property.PropertyType.FullName);
 }

 return dctClassFields;
}
</code></pre>

blocks|key|3187936|text|该方法简单、快速、安全。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3187937|public+static+class+PropertyInfoExtension+{
++++public+static+bool+IsNullableProperty(this+PropertyInfo+propertyInfo)
++++++++=>+propertyInfo.PropertyType.Name.IndexOf("Nullable`",+StringComparison.Ordinal)+>+-1;
}|code-block|syntax|javascript|3187938|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 method is easy, fast and safe

<pre><code>public static class PropertyInfoExtension {
 public static bool IsNullableProperty(this PropertyInfo propertyInfo)
 =&gt; propertyInfo.PropertyType.Name.IndexOf("Nullable`", StringComparison.Ordinal) &gt; -1;
}
</code></pre>

blocks|key|270416|text|正如Yves+M.所指出的，它很简单，如下所示。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|270417|var+properties+=+typeof(T).GetProperties();

++foreach+(var+prop+in+properties)
++{
+++++var+propType+=+Nullable.GetUnderlyingType(prop.PropertyType)+??+prop.PropertyType;
+++++var+dataType+=+propType.Name;
++}|code-block|syntax|javascript|270418|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/users/1480391/yves-m^0|2|7|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]]]]

As pointed out by <a href="https://stackoverflow.com/users/1480391/yves-m">Yves M.</a> it is as simple as below.

<pre><code>var properties = typeof(T).GetProperties();

 foreach (var prop in properties)
 {
 var propType = Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType;
 var dataType = propType.Name;
 }
</code></pre>

I examine the properties of an object via reflection and continue processing the data type of each property. Here is my (reduced) source:

<pre><code>private void ExamineObject(object o)
{
 Type type = default(Type);
 Type propertyType = default(Type);
 PropertyInfo[] propertyInfo = null;

 type = o.GetType();

 propertyInfo = type.GetProperties(BindingFlags.GetProperty |
 BindingFlags.Public |
 BindingFlags.NonPublic |
 BindingFlags.Instance);
 // Loop over all properties
 for (int propertyInfoIndex = 0; propertyInfoIndex &lt;= propertyInfo.Length - 1; propertyInfoIndex++)
 {
 propertyType = propertyInfo[propertyInfoIndex].PropertyType;
 }
}
</code></pre>

My problem is, that I newly need to handle nullable properties, but I have no clue how to get the type of a nullable property.

Find type of nullable properties via reflection

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我通过反射检查对象的属性，并继续处理每个属性的数据类型。以下是我的(精简)源代码：private void ExamineObject(object o){  Type type = default(Type);  Type propertyType = default(Type);  PropertyInfo[] p...

问通过反射查找可为空的属性的类型
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