如何将ExpandoObject添加到已经存在的ExpandoObject中？

Question

这是我的代码：

dynamic App = new ExpandoObject();
//App names are SAP, CRM and ERP 

//App names - adding static
//App.SAP = new ExpandoObject();
//App.CRM = new ExpandoObject();
//App.ERP = new ExpandoObject();

在最后4行中，我添加了一个ExpandoObject静态，因为我以前知道应用程序的名称。但我想动态地做这个。

我可以动态地处理这些属性：

AddProperty(App.SAP, "Name", "sap name");
AddProperty(App.SAP, "UserID", "sap userid");
AddProperty(App.SAP, "EmailID", "userid@sap.com");
AddProperty(App.SAP, "GroupOf", "group1, group2, group3");


public static void AddProperty(ExpandoObject expando, string propertyName, object propertyValue)
{
    // ExpandoObject supports IDictionary so we can extend it like this
    var expandoDict = expando as IDictionary<string, object>;
    if (expandoDict.ContainsKey(propertyName))
        expandoDict[propertyName] = propertyValue;
    else
        expandoDict.Add(propertyName, propertyValue);
}

但是我需要将这个对象App.SAP添加到这个应用程序中，这个应用程序也是一个ExpandoObject，所以以后我可以动态地添加App.CRM或App.ERP。

Answer 1

你会得到

ExpandoObject没有SAP的定义.

采用这一办法：

AddProperty(App.SAP, "Name", "sap name");

因为您没有在SAP中声明APP ExpandoObject。

相反，您可以尝试通过提供AddProperty并处理嵌套对象来修改parentName方法。

AddProperty(App, "SAP", "Name", "sap name");
AddProperty(App, "SAP", "UserID", "sap userid");
AddProperty(App, "SAP", "EmailID", "userid@sap.com");
AddProperty(App, "SAP", "GroupOf", "group1, group2, group3");

public static void AddProperty(ExpandoObject expando, string parentName, string propertyName, object propertyValue)
{
    // ExpandoObject supports IDictionary so we can extend it like this
    var expandoDict = expando as IDictionary<string, object>;
    if (expandoDict.ContainsKey(parentName))
    {
        ((IDictionary<string, object>)expandoDict[parentName])[propertyName] = propertyValue;
    }
    else
    {
        Dictionary<string, object> child = new Dictionary<string, object>
        {
            { propertyName,  propertyValue }
        };
            
        expandoDict.Add(parentName, child);
    }
}

样本程序