/// <summary>
/// Reading Default Connection String From AppSettings Xml File
/// </summary>
/// <param name="fileName"></param>
/// <returns type="DataSettings"></returns>
public static DataSettings ReadConnectionStringFromXml(string fileName)
{
try
{
if (string.IsNullOrEmpty(fileName))
throw new ArgumentNullException("fileName");
DataSettings dataSettings = new DataSettings();
//creating new XML document
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(fileName);
XmlNode dataConnectionStringNode = xmlDoc.SelectSingleNode("/connectionStrings/connectionString/dataConnectionString");
string dataConnectionString = dataConnectionStringNode.InnerText;
XmlNode dataProviderNameNode = xmlDoc.SelectSingleNode("/connectionStrings/connectionString/dataProviderName");
string dataProviderName = dataProviderNameNode.InnerText;
dataSettings.DataConnectionString = String.IsNullOrEmpty(dataConnectionString) ? null : dataConnectionString;
dataSettings.DataProvider = String.IsNullOrEmpty(dataProviderName) ? null : dataProviderName;
return dataSettings;
}
catch (Exception ex)
{
throw ex;
}
}
protected virtual string ComposeSettings(DataSettings settings)
{
if (settings == null)
return "";
return string.Format("DataProvider: {0}{2}DataConnectionString: {1}{2}",
settings.DataProvider,
settings.DataConnectionString,
Environment.NewLine
);
}
public virtual void SaveSettings(DataSettings settings)
{
if (settings == null)
throw new ArgumentNullException("settings");
//use webHelper.MapPath instead of HostingEnvironment.MapPath which is not available in unit tests
string filePath = LocalSettings.AppSettingsFilePath;
if (!File.Exists(filePath))
{
using (File.Create(filePath))
{
//we use 'using' to close the file after it's created
}
}
var text = ComposeSettings(settings);
File.WriteAllText(filePath, text);
}
/// <summary>
/// Parsing Connection String To DataSettings From Text File
/// </summary>
/// <param name="text"></param>
/// <returns type="DataSettings"></returns>
public static DataSettings ParseDataSettingsFromText(string text)
{
var dataSettings = new DataSettings();
if (String.IsNullOrEmpty(text))
return dataSettings;
//Old way of file reading. This leads to unexpected behavior when a user's FTP program transfers these files as ASCII (\r\n becomes \n).
//var settings = text.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
var settings = new List<string>();
using (var reader = new StringReader(text))
{
string str;
while ((str = reader.ReadLine()) != null)
settings.Add(str);
}
foreach (var setting in settings)
{
var separatorIndex = setting.IndexOf(":");
if (separatorIndex == -1)
{
continue;
}
string key = setting.Substring(0, separatorIndex).Trim();
string value = setting.Substring(separatorIndex + 1).Trim();
switch (key)
{
case "DataProvider":
dataSettings.DataProvider = value;
break;
case "DataConnectionString":
dataSettings.DataConnectionString = value;
break;
default:
dataSettings.RawDataSettings.Add(key, value);
break;
}
}
return dataSettings;
}
