internal static string GetDataTypeDescription(BulkCopyDataType dataType)
{
var nullable = (((int)dataType & Constants.NullableDataType) == Constants.NullableDataType);
dataType = (BulkCopyDataType)((int)dataType & ~Constants.NullableDataType);
string dataTypeName;
switch (dataType)
{
case BulkCopyDataType.VarBinaryMax:
{
dataTypeName = "VarBinary(MAX)";
break;
}
case BulkCopyDataType.NVarCharMax:
{
dataTypeName = "NVarChar(MAX)";
break;
}
case BulkCopyDataType.VarCharMax:
{
dataTypeName = "VarChar(MAX)";
break;
}
default:
{
dataTypeName = dataType.ToString("G");
break;
}
}
return dataTypeName + (nullable ? " NULL" : " NOT NULL");
}
internal UnboundColumn(short index, BulkCopyDataType dataType)
{
if (index < 0)
{
throw new ArgumentOutOfRangeException("index", index, "The argument must be >= 0.");
}
_index = index;
_dataType = dataType;
}
protected MaxDataType(short index, BulkCopyDataType dataType, BindingFlags options)
{
if (index < 0)
{
throw new ArgumentOutOfRangeException("index", index, "The argument must be >= 0.");
}
_dataType = dataType;
_index = index;
_options = options;
}
protected StandardDataType(short index, BulkCopyDataType dataType, int length, BindingFlags options = BindingFlags.None)
{
if (index < 0)
{
throw new ArgumentOutOfRangeException("index", index, "The argument must be >= 0.");
}
int byteLength;
if ((options & BindingFlags.DoubleByteCharacterSet) == 0)
{
if (length < 1 || length > Constants.SqlMaximumByteLength)
{
throw new ArgumentOutOfRangeException("length", length, "The argument must be between 1 and 8000.");
}
byteLength = length;
}
else
{
if (length < 1 || length > Constants.SqlMaximumDoubleByteCharacterSetByteLength)
{
throw new ArgumentOutOfRangeException("length", length, "The argument must be between 1 and 4000.");
}
byteLength = length * 2;
}
if (dataType >= BulkCopyDataType.NullableBit)
{
options |= BindingFlags.Nullable;
}
if ((options & (BindingFlags.Nullable | BindingFlags.VariableLengthIn | BindingFlags.VariableLengthOut)) != 0)
{
_indicatorLength = IndicatorLengthInBytes;
}
_byteLength = byteLength;
_data = new byte[_indicatorLength + byteLength];
_dataType = dataType;
_handle = GCHandle.Alloc(_data, GCHandleType.Pinned);
_index = index;
_options = options;
_pointer = (byte*)_handle.AddrOfPinnedObject();
}
public StandardDataTypeImpl(short index, BulkCopyDataType dataType, int length, BindingFlags options)
: base(index, dataType, length, options)
{
//
}
public MaxDataTypeImpl(short index, BulkCopyDataType dataType, BindingFlags options)
: base(index, dataType, options)
{
//
}
