Action
               
               
               Gets the line type for the chart.
               Possible values include:
                  
                     - curve - Draws curves between data points.
- horizontal - Draws only the vertical line from the x-coordinate of the first point to the x-coordinate of the second point
                        at the y-coordinate of the second point. Repeats this for each data point.
                     
- reverseStep - Draws lines as horizontal segments. At the first data point, draws a vertical line and then a horizontal line
                        to the second point, and repeats for each data point.
                     
- segment - Draws lines as connected segments that are angled to connect at each data point in the series.
- step - Draws lines as horizontal segments. At the first data point, draws a horizontal line and then a vertical boundary line
                        to the second point, and repeats for each data point.
                     
- vertical - Draws only the vertical line from the y-coordinate of the first point to the y-coordinate of the second point at
                        the x-coordinate of the second point. Repeats this for each data point.
                     
The default value is segment.
               
             
            
            
               Syntax
               
               
               C#
                  
protected String form { get; }
                  VB
                  
'Declaration
Protected Read Property form As String
                   
            
            
               
Access
               
               Read only.