如何从C#(2.0)中的属性获取属性的名称

我知道我可以有一个属性,但这比我想去的工作更多......而且不够通用.

我想做点什么

class Whotsit
{
    private string testProp = "thingy";

    public string TestProp 
    {
        get { return testProp; }
        set { testProp = value; }
    }

}

...

Whotsit whotsit = new Whotsit();
string value = GetName(whotsit.TestProp); //precise syntax up for grabs..

在哪里我期望价值等于"TestProp"

但我不能为我的生活找到正确的反射方法来编写GetName方法...

编辑:我为什么要这样做？我有一个类来存储从'name','value'表中读取的设置.这由基于反射的通用方法填充.我很想反写...

/// 

/// Populates an object from a datatable where the rows have columns called NameField and ValueField. 
/// If the property with the 'name' exists, and is not read-only, it is populated from the 
/// valueField. Any other columns in the dataTable are ignored. If there is no property called
/// nameField it is ignored. Any properties of the object not found in the data table retain their
/// original values.
/// 
/// Type of the object to be populated.
/// The object to be populated
/// 'name, 'value' Data table to populate the object from.
/// Field name of the 'name' field'.
/// Field name of the 'value' field.
/// Setting to control conversions - e.g. nulls as empty strings.

public static void PopulateFromNameValueDataTable
        (T toBePopulated, System.Data.DataTable dataTable, string nameField, string valueField, PopulateOptions options)
    {
        Type type = typeof(T);
        bool nullStringsAsEmptyString = options == PopulateOptions.NullStringsAsEmptyString;

        foreach (DataRow dataRow in dataTable.Rows)
        {
            string name = dataRow[nameField].ToString();
            System.Reflection.PropertyInfo property = type.GetProperty(name);
            object value = dataRow[valueField];

            if (property != null)
            {
                Type propertyType = property.PropertyType;
                if (nullStringsAsEmptyString && (propertyType == typeof(String)))
                {
                    value = TypeHelper.EmptyStringIfNull(value);
                }
                else
                {
                    value = TypeHelper.DefaultIfNull(value, propertyType);
                }

                property.SetValue(toBePopulated, System.Convert.ChangeType(value, propertyType), null);
            }
        }
    }

进一步编辑:我只是在代码中,有一个Whotsit实例,我想得到'TestProp'属性的文本字符串.我知道这似乎有点奇怪,我可以使用文字"TestProp" - 或者在我的类的情况下使用数据表函数我将在PropertyInfos的foreach循环中.我只是好奇而已...

原始代码有字符串常量,我发现它很笨拙.

不,没有什么可以做的.表达式whotsit.TestProp将评估属性.你想要的是神话般的"infoof"运算符:

// I wish...
MemberInfo member = infoof(whotsit.TestProp);

实际上,您只能使用反射来按名称获取属性 - 而不是代码.(当然,或者获取所有属性.虽然它仍然无法帮助您处理样本.)

一种替代方法是使用表达式树:

Expression> = () => whotsit.TestProp;

然后检查表达式树以获取属性.

如果这些都没有帮助,也许你可以告诉我们更多你想要这个功能的原因？