public CExpression FExpression; //显示方式
public CExpressEdit Clone()
{
CExpressEdit obj = (CExpressEdit)this.MemberwiseClone();
if (FExpression != null)
{
obj.FExpression = FExpression.Clone();
}
return(obj);
}
public override Object EditValue(ITypeDescriptorContext context, IServiceProvider provider, Object value)
{
CExpressEdit expressEdit = (CExpressEdit)(value);
if (expressEdit != null)
{
return((Object)expressEdit.Edit());
}
else
{
return((Object)expressEdit);
}
}
public override Object ConvertTo(ITypeDescriptorContext context,
CultureInfo culture,
Object value,
Type destinationType)
{
if (destinationType.Equals(Type.GetType("System.String")) &&
value.GetType().Equals(Type.GetType("DMS.DMS_CommModel.CExpressEdit")))
{
CExpressEdit ExpressEdit = (CExpressEdit)(value);
return(ExpressEdit.szExpress);
}
TypeConverter aa = new TypeConverter();
return(aa.ConvertTo(context, culture, value, destinationType));
}
//实现内部函数
//public virtual bool SaveToDB(DbCommand command) override;
public virtual bool LoadFromNode(XmlElement Node)
{
Name = Node.GetAttribute("Name");
Description = Node.GetAttribute("Description");
DAType = (EDAType)Convert.ToInt32(Node.GetAttribute("DAType"));
VarType = (EVarTYPE)Convert.ToInt32(Node.GetAttribute("VarType"));
Unit = Node.GetAttribute("Unit");
ByteAddr = Convert.ToInt32(Node.GetAttribute("ByteAddr"));
BitAddr = Convert.ToInt32(Node.GetAttribute("BitAddr"));
for (int i = 0; i < 10; i++)
{
IntTag[i] = Convert.ToSingle(Node.GetAttribute("IntTag" + i.ToString()));
}
for (int i = 0; i < 5; i++)
{
StrTag[i] = Node.GetAttribute("StrTag" + i.ToString());
}
Length = Convert.ToInt32(Node.GetAttribute("Length"));
bHighLow = Convert.ToInt32(Node.GetAttribute("bHighLow"), 16);
bHighByte = BitConverter.GetBytes(bHighLow);
BaseValue = Convert.ToSingle(Node.GetAttribute("BaseValue"));
RatioValue = Convert.ToSingle(Node.GetAttribute("RatioValue"));
Readable = Convert.ToInt32(Node.GetAttribute("Readable"));
Writeable = Convert.ToInt32(Node.GetAttribute("Writeable"));
Default = Node.GetAttribute("Value");
SaveToDB = Convert.ToInt32(Node.GetAttribute("SaveToDB"));
if (StrTag[3].Length > 0)
{
ExpressR = new CExpressEdit(StrTag[3]);
}
if (StrTag[4].Length > 0)
{
ExpressW = new CExpressEdit(StrTag[4]);
}
switch (VarType)
{
case EVarTYPE.Var_INT:
iDBByteNum = sizeof(int);
break;
case EVarTYPE.Var_UINT:
iDBByteNum = sizeof(uint);
break;
case EVarTYPE.Var_LINT:
iDBByteNum = sizeof(long);
break;
case EVarTYPE.Var_ULINT:
iDBByteNum = sizeof(ulong);
break;
case EVarTYPE.Var_FLOAT:
iDBByteNum = sizeof(float);
break;
case EVarTYPE.Var_DOUBLE:
iDBByteNum = sizeof(double);
break;
case EVarTYPE.Var_CHAR: //"字符型";
iDBByteNum = sizeof(char);
break;
case EVarTYPE.Var_UCHAR: //"无符号字符型";
iDBByteNum = sizeof(char);
break;
case EVarTYPE.Var_BOOL: // "布尔型";
iDBByteNum = sizeof(bool);
break;
case EVarTYPE.Var_STRING: //"字符串型";
iDBByteNum = 0;
break;
case EVarTYPE.Var_BLOB: //"二进制型";
iDBByteNum = 1;
break;
default:
iDBByteNum = 0;
break;
}
return(true);
}
