C＃配置文件 [英] C# Configuration Files

问题描述

好了，一会我提前发布了如何读取其他程序的其他配置文件（这里是链接的 previous帖子，我成功地做到这一点。但是现在有一个问题，这个场景是这样的，我有两个节目。节目的 A 从读取其配置一个配置文件和程序的 B 只能用于修改配置文件其内容的 A 的读取。config文件的名称是 email.config 这是在同一个目录中，程序的 A ＆安培; B 位于

Okay, so a while ahead I posted how to read other config files of other programs (here is the link Previous Post. I managed to do it. But now there is another problem. The scenario is like this, I have two programs. Program A reads its configuration from a config file and program B is only used to modify the contents of the config file which A reads. The name of the config file is email.config. It is in the same directory in which program A & B resides.

现在的问题是，我得到了使用打开文件对话框中的附件文件的路径。如果路径指向同一个目录中的文件，程序运行完美！但是，如果其指向的目录以外的文件时，它抛出一个异常类型的 System.NullReferenceException 的。

The problem is that I get path of a file for attachment using open file dialog. If the path points to a file in the same directory, the program works perfect! But if it points to a file outside the directory it throws an exception of type System.NullReferenceException.

下面是code

private void saveBtn_Click(object sender, EventArgs e)
{
    try
    {
        // save everything and close
        string attachment = attachTxtBox.Text;

        var configMap = new ExeConfigurationFileMap { ExeConfigFilename = configFileName };
        // it throws exception here when
        // the path points to a file outside the exes directory
        Configuration externalConfig = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);

        externalConfig.AppSettings.Settings["ServerAddress"].Value = serverAddr;
        externalConfig.AppSettings.Settings["Port"].Value = port;
        externalConfig.AppSettings.Settings["SSL"].Value = ssl.ToString();
        externalConfig.AppSettings.Settings["Sender"].Value = senderAddr;
        externalConfig.AppSettings.Settings["SenderPassword"].Value = password;
        externalConfig.AppSettings.Settings["Subject"].Value = subject;
        externalConfig.AppSettings.Settings["AttachmentPath"].Value = attachment;
        externalConfig.AppSettings.Settings["Body"].Value = messageBody;

        // Save values in config
        externalConfig.Save(ConfigurationSaveMode.Full);
        Application.Exit();
    }
    catch (System.Exception ex)
    {
        MessageBox.Show("Error: " + ex.Message);
        Application.Exit();
    }
}

的内容的 email.config 的是：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings file="">
    <clear />
    <add key="ServerAddress" value="" />
    <add key="Port" value="" />
    <add key="Sender" value="" />
    <add key="SenderPassword" value="" />
    <add key="Subject" value="" />
    <add key="AttachmentPath" value="" />
    <add key="Body" value="" />
  </appSettings>
</configuration>

我在做什么错在这里？

What am I doing wrong here?

编辑：的 configFileName 的值是email.config的

推荐答案

嗯，我理解了它自己调试了近5小时后，妈的！

Well, I figured it out myself after debugging for almost 5 hours, Damn!

但问题是，当我用打开文件对话框，以获得文件的路径，它改变了当前目录是在对话框中选择一个，所以程序找不到配置文件。我所做的只是设置打开文件对话框，以真实的RestoreDirectory财产的噗的，它的工作

The problem was when I used OpenFileDialog to get the file path, it changed the current directory to the one which is selected in the dialog, so the program couldn't find the config file. All I did was to set the RestoreDirectory property of OpenFileDialog to true and poof it worked

谢谢大家，ChrisF，约恩·坎贝尔和pablito。

Thanks everyone, ChrisF, Eoin Campbell and pablito.

这篇关于C＃配置文件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！