public static bool TryConvert(
Type fromType,
Type toType,
object sourceValue,
out object result)
{
result = null;
var enumType = Choose(fromType, toType, t => t.IsEnum);
var stringType = Choose(fromType, toType, t => t == typeof(string));
if (enumType == null || stringType == null)
{
return(false);
}
if (sourceValue.GetType() != typeof(string))
{
// ReSharper disable once ConstantConditionalAccessQualifier
result = sourceValue?.ToString();
return(true);
}
var method = GenericTryParse.MakeGenericMethod(enumType);
var args = new[] { sourceValue, true, null };
var parsed = (bool)method.Invoke(null, args);
if (parsed)
{
result = args[2];
}
return(parsed);
}
public T Read <T>(string section, string key, T defaultValue, GenericTryParse <T> tryParse)
{
if (tryParse == null)
{
throw new ArgumentNullException("tryParse");
}
var valueString = ReadString(section, key, defaultValue.ToString());
if (string.IsNullOrEmpty(valueString))
{
return(defaultValue);
}
T value;
if (tryParse(valueString, out value))
{
return(value);
}
else
{
return(defaultValue);
}
}
internal GenericNumericConversionsDefault(
string input, GenericTryParse <T> tryParseMethod, GenericTryParseNumeric <T> tryParseNumericMethod, NumberStyles defaultStyles)
{
_input = input;
_tryParseMethod = tryParseMethod;
_tryParseNumericMethod = tryParseNumericMethod;
_defaultStyles = defaultStyles;
}
public static T TryParseDefault <T>(string value, T defaultValue, GenericTryParse <T> method)
{
if (method == null)
{
throw new ArgumentNullException("method");
}
T result;
return(method(value, out result) ? result : defaultValue);
}
public static T?TryParseNullable <T>(string value, GenericTryParse <T> method) where T : struct
{
if (method == null)
{
throw new ArgumentNullException("method");
}
T result;
if (!method(value, out result))
{
return(null);
}
return(result);
}
public static T Read <T>(this IniFile2 ini, string section, string key, T defaultValue, GenericTryParse <T> tryParse)
{
ValidateIniArgument(ini);
if (tryParse == null)
{
throw new ArgumentNullException("tryParse");
}
string valueString = string.Empty;
if (!ini.TryGet(section, key, ref valueString))
{
return(defaultValue);
}
T value;
if (tryParse(valueString, out value))
{
return(value);
}
else
{
return(defaultValue);
}
}
