[英]How can I use reflection to set this object's property?
I have an external library I am using, namely Aspose.Email.dll (available on NuGet ). 我有一个正在使用的外部库,即Aspose.Email.dll (在NuGet上可用)。 It has a
PageInfo
class. 它具有
PageInfo
类。 Go To Definition shows the following for it in Visual Studio : 转到定义在Visual Studio中显示了以下内容:
using System;
namespace Aspose.Email
{
public class PageInfo
{
protected PageInfo next;
public int AbsoluteOffset { get; }
public int ItemsPerPage { get; }
public bool LastPage { get; }
public virtual PageInfo NextPage { get; }
public int PageOffset { get; }
public int TotalCount { get; }
}
}
Long story short, I need to create a PageInfo object. 长话短说,我需要创建一个PageInfo对象。 How can I create one using Reflection and also set its
ItemsPerPage
property? 如何使用Reflection创建一个并设置其
ItemsPerPage
属性?
I have tried this: 我已经试过了:
var result = (PageInfo)FormatterServices.GetUninitializedObject(typeof(PageInfo));
typeof(PageInfo).GetProperty("ItemsPerPage", BindingFlags.Instance | BindingFlags.Public).SetValue(result, 1);
The problem is that SetValue
errors out with Property set method not found.
问题是
Property set method not found.
SetValue
错误Property set method not found.
Getter-only properties do not have setters. 仅限Getter的属性没有setter。 They use a
readonly
backing field that can only be set in the constructor. 它们使用只能在构造函数中设置的
readonly
后备字段。
You can change the properties to have private setter, eg 您可以将属性更改为具有私有设置器,例如
public int ItemsPerPage { get; private set; }
If you do not have access to the code, you can find the matching field using GetField
and set its value. 如果您无权访问该代码,则可以使用
GetField
查找匹配字段并设置其值。
typeof(PageInfo).GetTypeInfo().DeclaredFields
.First(f => f.Name.Contains("ItemsPerPage")).SetValue(result, 1);
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