Error CS0542 for Overloading and Optional Argument converting NT7 code to N8

[Shai Samuel]

I use Overloading and Optional Argument converting in a class to centralize different kinds of data to be operated. I know that C# 4.5 extended this option so I don't understand why I run into this compiler error CS0081 (Type parameter declaration must be an identifier not type). I would appreciate any suggestion.

Here are the NT8 code and the NT7 code below it.

		
// NT8 code that cases error CS0542
		public class @Logic_DataVal
		{
			//// Input variables
			private @Logic_DataType dataType;
			// DataSeries
			private Series<double> longValues;
			private Series<double> shortValues;
			private int displacement; // (>=0)
			// Fix Value
			private double fixValue;
			// Price
			private @Logic_PriceType longPriceType;
			private @Logic_PriceType shortPriceType;
			private int lookback; // (>=1)
			//
			private Indicator parentClass; 
			
			// @Logic_DataVal Constructor
			public @Logic_DataVal(Indicator parentClass)
			{
				this.parentClass = parentClass;
			}

			// DataSeries Setup
			public @Logic_DataVal Series<double>(Series<double> longValues, Series<double> shortValues)
			{
				return Series<double>(longValues, shortValues, 0);
			}
			public @Logic_DataVal Series<double>(Series<double> longValues, Series<double> shortValues, int displacement)
			{
				this.dataType = @Logic_DataType.DataSeries;
				// DataSeries
				this.longValues = longValues;
				this.shortValues = shortValues;
				this.displacement = displacement; // (>=0)
				// Fix Value
				this.fixValue = 0;
				// Price
				this.longPriceType = @Logic_PriceType.Close;
				this.shortPriceType = @Logic_PriceType.Close;
				this.lookback = 0; // (>=1)
				return this;
			}
			
			// Fix Value Setup
			public @Logic_DataVal FixValue(double fixValue)
			{
				this.dataType = @Logic_DataType.FixValue;
				// Fix Value
				this.fixValue = fixValue;
				// DataSeries
				this.longValues = null;
				this.shortValues = null;
				this.displacement = 0;
				// Price
				this.longPriceType = @Logic_PriceType.Close;
				this.shortPriceType = @Logic_PriceType.Close;
				this.lookback = 0; // (>=1)
				return this;
			}
			
			// Price Setup
			public @Logic_DataVal Price(@Logic_PriceType longPriceType, @Logic_PriceType shortPriceType, int lookback)
			{
				this.dataType = @Logic_DataType.Price;
				// Price
				this.longPriceType = longPriceType;
				this.shortPriceType = shortPriceType;
				this.lookback = lookback; // (>=1)
				// DataSeries
				this.longValues = null;
				this.shortValues = null;
				this.displacement = 0;
				// Fix Value
				this.fixValue = 0;
				return this;
			}
...
				}
				return value;
			}
		}

Here is the original NT7 code:

// NT7 code
public class @Logic_DataVal
		{
			//// Input variables
			private @Logic_DataType dataType;
			// DataSeries
			private DataSeries longValues;
			private DataSeries shortValues;
			private int displacement; // (>=0)
			// Fix Value
			private double fixValue;
			// Price
			private @Logic_PriceType longPriceType;
			private @Logic_PriceType shortPriceType;
			private int lookback; // (>=1)
			//
			private Indicator parentClass; 
			
			// @Logic_DataVal Constructor
			public @Logic_DataVal(Indicator parentClass)
			{
				this.parentClass = parentClass;
			}

			// DataSeries Setup
			public @Logic_DataVal DataSeries(DataSeries longValues, DataSeries shortValues)
			{
				return DataSeries(longValues, shortValues, 0);
			}
			public @Logic_DataVal DataSeries(DataSeries longValues, DataSeries shortValues, int displacement)
			{
				this.dataType = @Logic_DataType.DataSeries;
				// DataSeries
				this.longValues = longValues;
				this.shortValues = shortValues;
				this.displacement = displacement; // (>=0)
				// Fix Value
				this.fixValue = 0;
				// Price
				this.longPriceType = @Logic_PriceType.Close;
				this.shortPriceType = @Logic_PriceType.Close;
				this.lookback = 0; // (>=1)
				return this;
			}
			
			// Fix Value Setup
			public @Logic_DataVal FixValue(double fixValue)
			{
				this.dataType = @Logic_DataType.FixValue;
				// Fix Value
				this.fixValue = fixValue;
				// DataSeries
				this.longValues = null;
				this.shortValues = null;
				this.displacement = 0;
				// Price
				this.longPriceType = @Logic_PriceType.Close;
				this.shortPriceType = @Logic_PriceType.Close;
				this.lookback = 0; // (>=1)
				return this;
			}
			
			// Price Setup
			public @Logic_DataVal Price(@Logic_PriceType longPriceType, @Logic_PriceType shortPriceType, int lookback)
			{
				this.dataType = @Logic_DataType.Price;
				// Price
				this.longPriceType = longPriceType;
				this.shortPriceType = shortPriceType;
				this.lookback = lookback; // (>=1)
				// DataSeries
				this.longValues = null;
				this.shortValues = null;
				this.displacement = 0;
				// Fix Value
				this.fixValue = 0;
				return this;
			}
			
			// return the long Value
			public double GetLong()
			{
				return GetLong(0);
			}

...
				}
				return value;
			}
		}

[NinjaTrader_PatrickH]

Hello Shai Samuel,

Thank you for your post.

What line is reported for the compile error? Can you attach a screenshot of the error after double clicking on the error to highlight the offending line of code?

To send a screenshot with Windows 7 or newer I would recommend using Window's Snipping Tool.

Click here for instructions: http://windows.microsoft.com/en-us/w...#1TC=windows-8

Alternatively to send a screenshot press Alt + PRINT SCREEN to take a screenshot of the selected window. Then go to Start--> Accessories--> Paint, and press CTRL + V to paste the image. Lastly, save as a jpeg file and send the file as an attachment.

Click here for detailed instruction: http://take-a-screenshot.org/

I look forward to your response.

[Shai Samuel]

Thank you Patrick, attach is the screen.

[NinjaTrader_JoshG]

Hello Shai,

It appears that you are using an invalid naming convention for your method. The proper syntax is below.
public Series<double> MyMethodName(Series<double> var1, series<double> var2)

You could remove the "<double>" in Series<double> and you would have a valid name.

The following links are the naming guidelines methods

https://msdn.microsoft.com/en-us/library/xzf533w0(v=vs.71).aspx

https://msdn.microsoft.com/en-us/library/4df752aw(v=vs.71).aspx

Let me know if you have any more questions about this.