/// <summary>
/// eg:04abcd
/// data=abcd ,herder=len(abcd)=04
/// </summary>
/// <param name="headerLength">add length for eatch data row</param>
/// <returns></returns>
public string ToFixedLengthString(int headerLength)
{
int length = 0;
StringBuilder sb = new StringBuilder();
foreach (var pi in this.GetType().GetProperties())
{
FixedLengthAttribute attribute = FixedLengthHelper.GetCustomAttribute <FixedLengthAttribute>(pi);
if (attribute != null && attribute.Length > 0)
{
if (attribute.Type == FixedLengthType.A)
{
sb.Append(HandleFixedString(pi.GetValue(this, null), attribute.Length));
}
else
{
sb.Append(HandleFixedNumber(pi.GetValue(this, null), attribute.Length));
}
length += attribute.Length;
}
}
if (headerLength > 0)
{
sb.Insert(0, HandleFixedNumber(length.ToString(), headerLength));
}
return(sb.ToString());
}
public static T FromFixedLengthString <T>(string input, int headerLength)
{
T obj = Activator.CreateInstance <T>();
string value = "";
int startIndex = 0;
if (headerLength > 0)
{
startIndex = headerLength;
}
StringBuilder sb = new StringBuilder();
foreach (var pi in obj.GetType().GetProperties())
{
FixedLengthAttribute attribute = FixedLengthHelper.GetCustomAttribute <FixedLengthAttribute>(pi);
if (attribute != null && attribute.Length > 0)
{
if (input.Length <= startIndex)
{
break;
}
else if (input.Length > startIndex && input.Length < startIndex + attribute.Length)
{
//value = input.Substring(startIndex);
value = SubstringWide(input, startIndex);
}
else
{
//value = input.Substring(startIndex, attribute.Length);
value = SubstringWide(input, startIndex, attribute.Length);
}
pi.SetValue(obj, value, null);
startIndex += attribute.Length;
}
}
return(obj);
}
