序列化对象 [英] Serializing an object

问题描述

protected override void LoadToView(CaseStageDomObj caseStage)
        {
                Button btn = (Button)((ViewComplaint)Page).ReturnTheButton();
                Button _button = (Button)Serialize<Button>(btn);
                ViewState.Add("Button", _button);
        }

public static MemoryStream Serialize<Button>(Button btn)
        {
            
            DataContractSerializer s = new DataContractSerializer(typeof(Button));
            MemoryStream ms = new MemoryStream();
            s.WriteObject(ms, btn);
            return ms;
        } 

为什么显示以下错误

无法将类型''System.IO.MemoryStream''转换为''System.Web.UI.WebControls.Button''

Why its showing the following error

Cannot convert type ''System.IO.MemoryStream'' to ''System.Web.UI.WebControls.Button''

推荐答案

您的调用返回:Serialize< button>(btn):是System.IO.MemoryStream对象保留了Button的序列化形式.

您不能只是将其投射"回Button对象本身.

您必须反序列化MemoryStream.您可以使用与序列化相同的DataContractSerializer，但用MS表示:要检索数据，请创建一个适合于读取数据格式的对象(例如XML文档的XmlDictionaryReader)并调用ReadObject方法."

最好，比尔

The return of your call to: Serialize<button>(btn): is a System.IO.MemoryStream object that holds the serialized form of the Button.

You can''t just "cast" that back to the Button object itself.

You have to de-serialize the MemoryStream. You can use the same DataContractSerializer you use to serialize, but, in MS'' words: "To retrieve data, create an object appropriate to reading the data format (such as an XmlDictionaryReader for an XML document) and call the ReadObject method."

best, Bill

这篇关于序列化对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！