/// <summary>
/// Writes contents of datatable to a delimited stringwriter
/// </summary>
/// <param name="dt"></param>
/// <param name="delimiter"></param>
/// <returns></returns>
public static StringWriter Delimit(this DataTable dt, string delimiter)
{
// Vars
StringWriter sw;
// Write table contents into string
using (sw = new StringWriter())
{
// Write out header
var headerColumns = new string[dt.Columns.Count];
for (int i = 0; i < dt.Columns.Count; i++)
{
headerColumns[i] = dt.Columns[i].ColumnName;
}
sw.WriteLine(String.Join(delimiter, headerColumns));
// Write out each row
foreach (DataRow row in dt.Rows)
{
var rowValues = new string[dt.Columns.Count];
for (int i = 0; i < dt.Columns.Count; i++)
{
rowValues[i] = (string)EnhancedConvertor.ChangeType(row[i], typeof(string));
}
sw.WriteLine(String.Join(delimiter, rowValues));
}
}
return(sw);
}
/// <summary>
/// Convenient wrapper around <see cref="DataRowExtensions.Field{T}(DataRow,DataColumn)"/>
/// to allow supplying an Enum to define the column index
/// </summary>
/// <remarks>
/// This method uses the <see cref="EnhancedConvertor"/> to provide better support for casting between
/// the underlying field value and the desired type <typeparamref name="T"/>
/// </remarks>
public static T Field <T>(this DataRow source, Enum columnIndex)
{
var column = (int)Convert.ChangeType(columnIndex, typeof(int));
var rawValue = source.Field <object>(column);
return((T)EnhancedConvertor.ChangeType(rawValue, typeof(T)));
}
/// <summary>
/// Convenient wrapper around <see cref="System.Data.DataRowExtensions.Field{T}(DataRow,DataColumn)"/>
/// to allow supplying an Enum to define the column index and a default value (<paramref name="valueIfNull"/>)
/// for when the column value returns a <see cref="DBNull"/>
/// </summary>
/// <remarks>
/// This method uses the <see cref="EnhancedConvertor"/> to provide better support for casting between
/// the underlying field value and the desired type <typeparamref name="T"/>
/// </remarks>
public static T Field <T>(this DataRow source, Enum columnIndex, T valueIfNull)
{
var column = (int)Convert.ChangeType(columnIndex, typeof(int));
return((T)(Convert.IsDBNull(source[column])
? valueIfNull
: EnhancedConvertor.ChangeType(source[column], typeof(T))));
}
public override object NullSafeGet(IDataReader rs, string[] names, object owner)
{
var valueFromDb = (string)NHibernateUtil.String.NullSafeGet(rs, names[0]);
if (string.IsNullOrEmpty(valueFromDb))
{
return(default(T));
}
string concatenatedEnumName = valueFromDb.Replace(" ", "");
return(EnhancedConvertor.ChangeType(concatenatedEnumName, typeof(T)));
}
string IStringSerializer.Serialize <T>(T o)
{
return(Serialize(EnhancedConvertor.ChangeType <TSubject>(o)));
}
T IStringSerializer.Deserialize <T>(string encryptedText)
{
return(EnhancedConvertor.ChangeType <T>(Deserialize(encryptedText)));
}
