This document is archived and information here might be outdated.  Recommended version.


Convert Decimal Degree To Radian Snippet (ArcObjects .NET 10.6 SDK)
ArcObjects Library Reference

Convert Decimal Degree To Radian Snippet

Convert a Decimal Degree to a Radian.

[C#]
/// <summary>
/// Convert a Decimal Degree to a Radian.
/// </summary>
/// <param name="double_DecimalDegree">A System.Double that is a Decimal Degree value. Example: 180</param>
/// <returns>A System.Double that is a Radina value. Example: 3.14</returns>
/// <remarks></remarks>
public System.Double ConvertDecimalDegreeToRadian(System.Double double_DecimalDegree)
{

  // Create an AngleFormat object and set AngleFormat options through the IAngleFormat interface
  ESRI.ArcGIS.esriSystem.IAngleFormat angleFormat=new ESRI.ArcGIS.esriSystem.AngleFormatClass();

  ESRI.ArcGIS.esriSystem.INumberFormat numberFormat=(ESRI.ArcGIS.esriSystem.INumberFormat)angleFormat; // Explicit Cast

  // Display radian values. A degree-to-radian conversion takes place in the ValueToString method.
  angleFormat.AngleInDegrees=true; //Input values are in degrees
  angleFormat.DisplayDegrees=false; //Display Value in Radians

  System.String string_Radian=numberFormat.ValueToString(double_DecimalDegree);
  System.Double double_Radian=System.Convert.ToDouble(string_Radian);

  return double_Radian;

}
[Visual Basic .NET]
''' <summary>
''' Convert a Decimal Degree to a Radian.
''' </summary>
''' <param name="double_DecimalDegree">A System.Double that is a Decimal Degree value. Example: 180</param>
''' <returns>A System.Double that is a Radina value. Example: 3.14</returns>
''' <remarks></remarks>
Public Function ConvertDecimalDegreeToRadian(ByVal double_DecimalDegree As System.Double) As System.Double

  ' Create an AngleFormat object and set AngleFormat options through the IAngleFormat interface
  Dim angleFormat As ESRI.ArcGIS.esriSystem.IAngleFormat=New ESRI.ArcGIS.esriSystem.AngleFormatClass

  Dim numberFormat As ESRI.ArcGIS.esriSystem.INumberFormat=CType(angleFormat, ESRI.ArcGIS.esriSystem.INumberFormat) 'Explicit Cast

  ' Display radian values. A degree-to-radian conversion takes place in the ValueToString method.
  angleFormat.AngleInDegrees=True 'Input values are in degrees
  angleFormat.DisplayDegrees=False 'Display Value in Radians

  Dim string_Radian As System.String=numberFormat.ValueToString(double_DecimalDegree)
  Dim double_Radian As System.Double=CDbl(string_Radian)

  Return double_Radian

End Function

Additional Requirements
  • The code in this document requires the following References added to the Visual Studio project:
  • ESRI.ArcGIS.System