ArcGIS AddIN开发之COM对象写入注册表

做一个交互式绘制文字的工具，希望这次设置的Symbol，下次打开ArcMap时自动调用这个Symbol，并支持对其进行修改。

解决方法是将这个Symbol写入注册表中，每次自动读取上一次设置的Symbol，如果修改了Symbol，则自动写入注册表中。

相关文章:

注册表读写

http://blog.csdn.net/p424671075/article/details/6176219

ESRI COM对象序列化

http://blog.csdn.net/xgyb12458/article/details/4125911

Object与二进制的转换

http://www.cnblogs.com/jesszhu/archive/2013/08/22/3276556.html

阅读上述帖子后，开始着手写。首先想的是将ISymbol装箱为Object，再序列号为二进制，就可以写入注册表了。调试时显示这个Object不支持序列化

后来查阅到COM对象的序列化，需要用到IXMLSerializer，将COM对象序列化为字符，使用方式如下：

public string esriSerializer(object obj)

        {

            IXMLSerializer xmlSerializer = new XMLSerializerClass();

            string xmlstring = xmlSerializer.SaveToString(obj, null, null);

            return xmlstring;

        }



        public object esriDeserializer(string str)

        {

            IXMLSerializer xmlSerializer = new XMLSerializerClass();

            return xmlSerializer.LoadFromString(str, null, null);

        }

　　　　public string esriSerializer(object obj)

        {

            IXMLSerializer xmlSerializer = new XMLSerializerClass();

            string xmlstring = xmlSerializer.SaveToString(obj, null, null);

            return xmlstring;

        }



        public object esriDeserializer(string str)

        {

            IXMLSerializer xmlSerializer = new XMLSerializerClass();

            return xmlSerializer.LoadFromString(str, null, null);

        }

之后，在将字符串对象序列化为二进制，写入注册表即可。

序列化为与反序列化二进制的代码如下：

public byte[] BinarySerializer(object obj)

        {

            try

            {

                using (var ms = new MemoryStream())

                {

                    var formatter = new BinaryFormatter();

                    formatter.Serialize(ms, obj);

                    var data = ms.ToArray();

                    return data;

                }

            }

            catch (InvalidOperationException)

            {

                throw;

            }

        }



        public object BinaryDeserializer(byte[] bt)

        {

            object obj=null;

            try

            {

                using (var ms = new MemoryStream(bt))

                {

                    var formatter = new BinaryFormatter();

                    obj=formatter.Deserialize(ms);

                }

            }

            catch (InvalidOperationException)

            {

                

            }

            return obj;

        }

读取与写入注册表代码如下：

/// <summary>

        /// 从注册表获取值

        /// </summary>

        /// <param name="toolname">工具名称</param>

        /// <param name="key">值名称</param>

        /// <returns></returns>

        public object getValueFromReg(string toolname,string key)

        {

            object obj=null;

            try

            {

                RegistryKey rkey = Registry.LocalMachine;

                RegistryKey rootkey = Registry.LocalMachine;

                RegistryKey sftkey = rootkey.OpenSubKey("software", true);

                RegistryKey llcsft = sftkey.OpenSubKey("llcSft");

                RegistryKey AddinCfg = llcsft.OpenSubKey("AddInConfig");

                RegistryKey AddInName = AddinCfg.OpenSubKey(toolname);

                byte[] tmp = (byte[])AddInName.GetValue(key);

                obj = esriDeserializer(BinaryDeserializer(tmp).ToString());

            }

            catch (System.Exception ex)

            {

                return null;

            }

            return obj;

        }



        /// <summary>

        /// 写入注册表

        /// </summary>

        /// <param name="toolName">工具名称</param>

        /// <param name="pm">键值</param>

        /// <returns></returns>

        public bool setValueToReg(string toolName,KeyValuePair<string,object> pm)

        {

            try

            {

                RegistryKey rootkey = Registry.LocalMachine;

                RegistryKey sftkey = rootkey.OpenSubKey("software",true);

                RegistryKey llcsft = sftkey.CreateSubKey("llcSft");

                RegistryKey AddinCfg = llcsft.CreateSubKey("AddInConfig");

                RegistryKey AddInName = AddinCfg.CreateSubKey(toolName);

                AddInName.SetValue(pm.Key, BinarySerializer(esriSerializer(pm.Value)), RegistryValueKind.Binary);

            }

            catch (System.Exception ex)

            {

                

            }

            return true;

        }

使用中，直接调用setValueToReg，getValueFromReg两个函数即可。