private void ShowAField(IFieldDescription fieldDescription)
{
Label fieldLbl = new Label {
Text = "Field " + fieldDescription.FieldNumber
};
if (fieldDescription.FieldName != null)
{
fieldLbl.Text = fieldDescription.FieldName;
}
Entry fieldEntry = new Entry {
HorizontalOptions = LayoutOptions.FillAndExpand
};
fieldEntry.ClassId = fieldDescription.FieldNumber.ToString();
StackLayout formCell = new StackLayout {
HorizontalOptions = LayoutOptions.FillAndExpand,
Orientation = StackOrientation.Horizontal,
Children = { fieldLbl, fieldEntry }
};
Children.Add(formCell);
}
private IFieldDescription[] GetFieldsFromPrinter()
{
IConnection connection = myPrinter.Connection;
IFieldDescription[] fields = new IFieldDescription[0];
try
{
connection.Open();
CheckPrinterLanguage(connection);
IZebraPrinter printer = ZebraPrinterFactory.Current.GetInstance(connection);
byte[] rawformat = printer.RetrieveFormatFromPrinter(_format.Path);
string formatstring = Encoding.UTF8.GetString(rawformat, 0, rawformat.Length);
fields = printer.GetVariableFields(formatstring);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Exception:" + e.Message);
ShowErrorAlert("GetFieldsFromPrinter" + e.Message);
}
finally
{
if ((connection != null) && (connection.IsConnected))
{
connection.Close();
}
}
return(fields);
}
protected override void EmitBeginWriteField(ILGenerator gen, IFieldDescription field)
{
// XmlWriter.WriteStartElement("Field")
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, XmlSerializer.FieldElementName);
gen.Emit(OpCodes.Callvirt, XmlWriterWriteStartElement);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, XmlSerializer.NameAttributeName);
gen.Emit(OpCodes.Ldstr, field.Name);
gen.Emit(OpCodes.Callvirt, XmlWriterWriteAttributeString);
}
//modified from https://github.com/Zebra/LinkOS-Xamarin-Samples/blob/ZSDK_DevDemos/ZSDK_DevDemos/Xamarin_LinkOS_Developer_Demo/Xamarin_LinkOS_Developer_Demo/FormatView.cs
private IFieldDescription[] PrintFormatOnPrinter(string fileNameOnPrinter, string[] mydata)
{
IConnection connection = myPrinter.Connection;
IFieldDescription[] fields = new IFieldDescription[0];
try
{
connection.Open();
CheckPrinterLanguage(connection);
IZebraPrinter printer = ZebraPrinterFactory.Current.GetInstance(connection);
byte[] rawformat = printer.RetrieveFormatFromPrinter(fileNameOnPrinter);
string formatstring = Encoding.UTF8.GetString(rawformat, 0, rawformat.Length);
fields = printer.GetVariableFields(formatstring);
Dictionary <int, string> vars = new Dictionary <int, string>();
int i = 0;
foreach (IFieldDescription field in fields)
{
vars.Add(field.FieldNumber, mydata[i]);
i++;
}
printer.PrintStoredFormat(fileNameOnPrinter, vars);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Exception:" + e.Message);
ShowErrorAlert("GetFieldsFromPrinter" + e.Message);
}
finally
{
if ((connection != null) && (connection.IsConnected))
{
connection.Close();
}
}
return(fields);
}
protected override void EmitBeginReadField(ILGenerator gen, IFieldDescription field)
{
var correctField = gen.DefineLabel();
var actualElementName = gen.DeclareLocal(typeof(string));
// If reader.Name == FieldElementName goto correctField
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Callvirt, XmlReaderGetName);
gen.Emit(OpCodes.Stloc, actualElementName);
gen.Emit(OpCodes.Ldloc, actualElementName);
gen.Emit(OpCodes.Ldstr, XmlSerializer.FieldElementName);
gen.Emit(OpCodes.Call, StringEquals);
gen.Emit(OpCodes.Brtrue_S, correctField);
// throw new XmlParseException
EmitThrowXmlParseException(gen, actualElementName);
gen.MarkLabel(correctField);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, field.Name);
gen.Emit(OpCodes.Callvirt, XmlReaderMoveToAttributeByName);
gen.Emit(OpCodes.Pop);
}
protected override void EmitEndWriteField(ILGenerator gen, IFieldDescription field)
{
}
protected override void EmitBeginReadField(ILGenerator gen, IFieldDescription field)
{
}
protected override void EmitEndReadField(ILGenerator gen, IFieldDescription field)
{
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Callvirt, XmlReaderRead);
gen.Emit(OpCodes.Pop);
}
FrameworkElementFactory IFieldFactory.CreateField(IFactoryContext context, IFieldDescription fieldDescription)
{
return(CreateField(context, (TFieldDescription)fieldDescription));
}
protected override void EmitEndWriteField(ILGenerator gen, IFieldDescription field)
{
// XmlWriter.WriteEndElement()
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Callvirt, XmlWriterWriteEndElement);
}
public GroupAdapter(GroupDescription groupDescription, IFieldDescription lastField)
{
GroupDescription = groupDescription;
LastDescription = (FieldDescription)lastField;
}
