How to get PropertyDescriptor for current property?

Question

How can I get the PropertyDescriptor for the current property? For example:

[MyAttribute("SomeText")]
public string MyProperty
{
    get{....}
    set
    {
        // here I want to get PropertyDescriptor for this property.
    }
}

score 16 · Accepted Answer · edited May 30 '14 at 17:46

16

You could try this:


        public string Test
        {
            get
            {
                //Get properties for this
                System.ComponentModel.PropertyDescriptorCollection pdc = System.ComponentModel.TypeDescriptor.GetProperties( this );

                //Get property descriptor for current property
                System.ComponentModel.PropertyDescriptor pd = pdc[ System.Reflection.MethodBase.GetCurrentMethod().Name ];
            }
        }

edited May 30 '14 at 17:46

Uyghur Lives Matter

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answered Jan 18 '11 at 10:32

WraithNath

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2

ou... nice, and I can write the System.ComponentModel.PropertyDescriptorCollection pdc = System.ComponentModel.TypeDescriptor.GetProperties( this ); in my constructor to use then only once... thanks!! – Yuriy Jan 18 '11 at 10:36

toddmo · Answer 2 · 2016-06-11T21:38:58.717

Here's a re-usable conversion function for those who got to this post looking for a general function:

public static PropertyDescriptor GetPropertyDescriptor(PropertyInfo PropertyInfo)
{
    return TypeDescriptor.GetProperties(PropertyInfo.DeclaringType).Item(PropertyInfo.Name);
}

and here's an extension method:

public static PropertyDescriptor PropertyDescriptor(this PropertyInfo propertyInfo)
{
  return TypeDescriptor.GetProperties(propertyInfo.DeclaringType)[propertyInfo.Name];
}

score 5 · Answer 3 · answered Apr 01 '11 at 02:03

I found that the following worked:

        //  get property descriptions
        PropertyDescriptorCollection properties = TypeDescriptor.GetProperties ( this );

        //  get specific descriptor
        PropertyDescriptor property = properties.Find ( PropertyName, false );

where PropertyName is a value passed into a method.

score 0 · Answer 4 · answered Jan 18 '11 at 10:19

0

How about this?

this.GetType().GetProperty("MyProperty")

I think you're asking if you can do this without the string - i.e. some other token that represents 'this property'. I don't think that exists. But since you are writing this code anyway (?) what is the difficulty in just putting the name of the property in the code?

answered Jan 18 '11 at 10:19

James Gaunt

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Is this case I'll get PropertyInfo... but I need TypeConverter, DisplayName from my Property.. – Yuriy Jan 18 '11 at 10:22
also I can manually get all attributes and find typeConverter, but this is not good idea – Yuriy Jan 18 '11 at 10:24
also I can use TypeDescriptor.GetProperties( this ) and then run over all properties and find what I need... but maybe something buit-in was already implemented... and more quickly than that I wrote.. – Yuriy Jan 18 '11 at 10:26
Your code isn't refactoring friendly. Use a lamda instead of a string. – CodesInChaos Jan 18 '11 at 10:27
1

@CodeInChaos - how could you do this using a lambda? Could you post an example please? – James Gaunt Jan 18 '11 at 10:30

score 0 · Answer 5 · answered Sep 16 '22 at 17:01

For future reference, you can now do this:

public static PropertyDescriptor? GetPropertyDescriptor(
    this object target, 
    [CallerMemberName] string propertyName = ""
) => TypeDescriptor.GetProperties(target.GetType())
        .Find(propertyName, ignoreCase: false)

How to get PropertyDescriptor for current property?

5 Answers5