public VR GetVR(string key)
{
//如果对象存在，则直接从享元池获取
if (VRs.ContainsKey(key))
{
return((VR)VRs[key]);
}
//如果对象不存在，先创建一个新的对象添加到享元池中，然后返回
else
{
VR fw = null;
switch (key)
{
case "SS": fw = new SS(syntax); break;
case "US": fw = new US(syntax); break;
case "SL": fw = new SL(syntax); break;
case "UL": fw = new UL(syntax); break;
case "FL": fw = new FL(syntax); break;
case "FD": fw = new FD(syntax); break;
case "DA": fw = new DA(syntax); break;
case "TM": fw = new TM(syntax); break;
case "DT": fw = new DT(syntax); break;
case "OB": fw = new OB(syntax); break;
case "OF": fw = new OF(syntax); break;
case "OW": fw = new OW(syntax); break;
case "SQ": fw = new SQ(syntax); break;
case "UT": fw = new UT(syntax); break;
case "UN": fw = new UN(syntax); break;
//default for text
default: fw = new ST(syntax); break;
}
VRs.Add(key, fw);
return(fw);
}
}
public VR CreateVR(string key)
{
{
VR vr = null;
if (key == "UL")
{
vr = new UL(syntax);
}
else if (key == "US")
{
vr = new US(syntax);
}
else if (key == "AS")
{
vr = new AS(syntax);
}
else if (key == "DA")
{
vr = new DA(syntax);
}
else if (key == "DS")
{
vr = new DS(syntax);
}
else if (key == "FD")
{
vr = new FD(syntax);
}
else if (key == "DT")
{
vr = new DT(syntax);
}
else if (key == "SS")
{
vr = new SS(syntax);
}
else if (key == "FS")
{
vr = new FS(syntax);
}
else if (key == "OW")
{
vr = new OW(syntax);
}
else if (key == "UN")
{
vr = new UN(syntax);
}
else if (key == "UT")
{
vr = new UT(syntax);
}
else if (key == "SH")
{
vr = new SH(syntax);
}
else if (key == "ST")
{
vr = new ST(syntax);
}
else if (key == "LT")
{
vr = new LT(syntax);
}
else if (key == "AE")
{
vr = new AE(syntax);
}
else if (key == "CS")
{
vr = new CS(syntax);
}
else if (key == "IS")
{
vr = new IS(syntax);
}
else if (key == "SL")
{
vr = new SL(syntax);
}
else if (key == "SQ")
{
vr = new SQ(syntax);
}
else if (key == "TM")
{
vr = new TM(syntax);
}
else if (key == "UI")
{
vr = new UI(syntax);
}
else if (key == "LO")
{
vr = new LO(syntax);
}
else if (key == "TS")
{
vr = new TS(syntax);
}
else if (key == "PN")
{
vr = new PN(syntax);
}
else if (key == "OB")
{
vr = new OB(syntax);
}
else if (key == "OF")
{
vr = new OF(syntax);
}
else if (key == "FL")
{
vr = new FL(syntax);
}
return(vr);
}
}