如何测试如果类型是基本类型 [英] How To Test if Type is Primitive

问题描述

我有一个序列化类型成HTML标记code块。

I have a block of code that serializes a type into a Html tag.

Type t = typeof(T); // I pass <T> in as a paramter, where myObj is of type T
tagBuilder.Attributes.Add("class", t.Name);
foreach (PropertyInfo prop in t.GetProperties())
{
    object propValue = prop.GetValue(myObj, null);
    string stringValue = propValue != null ? propValue.ToString() : String.Empty;
    tagBuilder.Attributes.Add(prop.Name, stringValue);
}

这个伟大的工程，但我希望它只是做到这一点对于基本类型，如 INT ，双击， 布尔等，以及其他类型不属于原始的，但可以像字符串容易序列化。我希望它忽略一切就像列表和放大器;其他自定义类型。

This works great, except I want it to only do this for primitive types, like int, double, bool etc, and other types that aren't primitive but can be serialized easily like string. I want it to ignore everything else like Lists & other custom types.

任何人都可以建议我怎么做呢？或者我需要指定我想允许的地方，并打开属性的类型，看它是否是允许的类型？这是一个有点乱，所以这会是很好，如果我有一个整洁的方式。

Can anyone suggest how I do this? Or do I need to specify the types I want to allow somewhere and switch on the property's type to see if it's allowed? That's a little messy, so it'd be nice if I there was a tidier way.

推荐答案

您可以使用属性 Type.IsPrimitive ，但要小心，因为有一些类型，​​我们可以认为是原语，但他们地图无法，例如小数和字符串。

You can use the property Type.IsPrimitive, but be carefull because there are some types that we can think that are primitives, but they aren´t, for example Decimal and String.

编辑1： 添加样品code 的

下面是一个简单的code：

Here is a sample code:

if (t.IsPrimitive || t == typeof(Decimal) || t == typeof(String) || ... )
{
    // Is Primitive, or Decimal, or String
}

编辑2： @SLaks 的意见，有一些也许你想其他类型对待基元，太。我认为you'll要添加这个变化的一一的

Edit 2: As @SLaks comments, there are other types that maybe you want to treat as primitives, too. I think that you´ll have to add this variations one by one.

修改3： IsPrimitive =（布尔，字节，为SByte，Int16的，UINT16，的Int32，UInt32的，Int64的，UINT64，IntPtr的，UIntPtr，煤焦，双和单）
花药原始样型检查（T == typeof运算（DATETIME））

Edit 3: IsPrimitive = (Boolean, Byte, SByte, Int16, UInt16, Int32, UInt32, Int64, UInt64, IntPtr, UIntPtr, Char, Double, and Single), Anther Primitive-Like type to check (t == typeof(DateTime))

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