C# Configuration Files
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I am encountering a problem while reading config files. 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. The problem is that I get path of a file for attachment using open file dialog in program B. If the path points to a file in the same directory, program B works perfect while saving the data back to the config file! But if it points to a file outside the directory it throws an exception of type System.NullReferenceException. I have placed comments in the code where the exception occurs. Here is the code
static readonly string configFileName = "email.config";
private void saveBtn_Click(object sender, EventArgs e)
{
try
{
// save everything and close
string serverAddr = serverAddressTxtBox.Text;
string port = portTxtBox.Text;
bool ssl = sslRadioYes.Checked == true ? true : false;
string senderAddr = senderTxtBox.Text;
string password = passwordTxtBox.Text.Length != 0 ? Encrypt(passwordTxtBox.Text) : "";
string subject = subjectTxtBox.Text;
string attachment = attachTxtBox.Text;
string messageBody = msgBodyTxtBox.Text;
var configMap = new ExeConfigurationFileMap { ExeConfigFilename = configFileName };
Configuration externalConfig = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);/\* If attachment points to a file outside the exes directory externalConfig doesn't reads the config properly and throws exception of type System.NullReferenceException \*/ // here the exception is thrown 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: " + -
I am encountering a problem while reading config files. 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. The problem is that I get path of a file for attachment using open file dialog in program B. If the path points to a file in the same directory, program B works perfect while saving the data back to the config file! But if it points to a file outside the directory it throws an exception of type System.NullReferenceException. I have placed comments in the code where the exception occurs. Here is the code
static readonly string configFileName = "email.config";
private void saveBtn_Click(object sender, EventArgs e)
{
try
{
// save everything and close
string serverAddr = serverAddressTxtBox.Text;
string port = portTxtBox.Text;
bool ssl = sslRadioYes.Checked == true ? true : false;
string senderAddr = senderTxtBox.Text;
string password = passwordTxtBox.Text.Length != 0 ? Encrypt(passwordTxtBox.Text) : "";
string subject = subjectTxtBox.Text;
string attachment = attachTxtBox.Text;
string messageBody = msgBodyTxtBox.Text;
var configMap = new ExeConfigurationFileMap { ExeConfigFilename = configFileName };
Configuration externalConfig = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);/\* If attachment points to a file outside the exes directory externalConfig doesn't reads the config properly and throws exception of type System.NullReferenceException \*/ // here the exception is thrown 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: " +What object is null? Is it externalConfig, externalConfig.AppSettings or configMap? What format is your external path in? Have you escaped the backslashes correctly in your external path?
Between the idea And the reality Between the motion And the act Falls the Shadow
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What object is null? Is it externalConfig, externalConfig.AppSettings or configMap? What format is your external path in? Have you escaped the backslashes correctly in your external path?
Between the idea And the reality Between the motion And the act Falls the Shadow
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I am encountering a problem while reading config files. 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. The problem is that I get path of a file for attachment using open file dialog in program B. If the path points to a file in the same directory, program B works perfect while saving the data back to the config file! But if it points to a file outside the directory it throws an exception of type System.NullReferenceException. I have placed comments in the code where the exception occurs. Here is the code
static readonly string configFileName = "email.config";
private void saveBtn_Click(object sender, EventArgs e)
{
try
{
// save everything and close
string serverAddr = serverAddressTxtBox.Text;
string port = portTxtBox.Text;
bool ssl = sslRadioYes.Checked == true ? true : false;
string senderAddr = senderTxtBox.Text;
string password = passwordTxtBox.Text.Length != 0 ? Encrypt(passwordTxtBox.Text) : "";
string subject = subjectTxtBox.Text;
string attachment = attachTxtBox.Text;
string messageBody = msgBodyTxtBox.Text;
var configMap = new ExeConfigurationFileMap { ExeConfigFilename = configFileName };
Configuration externalConfig = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);/\* If attachment points to a file outside the exes directory externalConfig doesn't reads the config properly and throws exception of type System.NullReferenceException \*/ // here the exception is thrown 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: " +Well, I configured it out myself after debugging for almost 5 hours, Damn! 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
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