ArcObjects Library Reference (Geometry)

ISpatialReferenceFactory.CreateParameter Method

[Visual Basic .NET]
Public Function CreateParameter ( _
    ByVal parameterType As Integer _
) As IParameter

[C#]
public IParameter CreateParameter (
    int parameterType
);

[C++]
HRESULT CreateParameter(
  long parameterType,
  IParameter** newParameter
);

[C++]
Parameters
parameterType 
  parameterType is a parameter of type long
newParameter [out, retval]
  newParameter is a parameter of type IParameter

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

[C#]

            ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass(); // Declare an array of IParameters, and for each, create the required Parameter object
            // by using ISpatialReferenceFactory::CreateParamater. Then assign the parameter
            // a value. Below is an example used for a Transverse Mercator projection
            IParameter[] parameterArray = new IParameter[5];
            parameterArray[0] = spatialReferenceFactory.CreateParameter((int)esriSRParameterType.esriSRParameter_FalseEasting);
            parameterArray[0].Value = 500000;
            parameterArray[1] = spatialReferenceFactory.CreateParameter((int)esriSRParameterType.esriSRParameter_FalseNorthing);
            parameterArray[1].Value = 0;
            parameterArray[2] = spatialReferenceFactory.CreateParameter((int)esriSRParameterType.esriSRParameter_CentralMeridian);
            parameterArray[2].Value = -123;
            parameterArray[3] = spatialReferenceFactory.CreateParameter((int)esriSRParameterType.esriSRParameter_LatitudeOfOrigin);
            parameterArray[3].Value = 0;
            parameterArray[4] = spatialReferenceFactory.CreateParameter((int)esriSRParameterType.esriSRParameter_ScaleFactor);
            parameterArray[4].Value = 0.9996;

[Visual Basic .NET]

        'This example shows you how to declare a safe array of IParameter,
        'and for each, create the required Parameter object by using
        'ISpatialReferenceFactory::CreateParameter and assign each parameter a value.
        'Parameter types can be found in the esriGeometry esriSRParameterType
        'enumeration.  Below is an example used for a Transverse Mercator projection.

        Dim pSpatRefFact As ESRI.ArcGIS.Geometry.ISpatialReferenceFactory
        pSpatRefFact = New ESRI.ArcGIS.Geometry.SpatialReferenceEnvironment

        Dim aParamArray(5) As ESRI.ArcGIS.Geometry.IParameter
        aParamArray(0) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_FalseEasting)
        aParamArray(0).Value = 500000
        aParamArray(1) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_FalseNorthing)
        aParamArray(1).Value = 0
        aParamArray(2) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_CentralMeridian)
        aParamArray(2).Value = -123
        aParamArray(3) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_LatitudeOfOrigin)
        aParamArray(3).Value = 0
        aParamArray(4) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_ScaleFactor)
        aParamArray(4).Value = 0.9996

        'Below is an example for an Albers projection:

        Dim pSpatRefFact As ESRI.ArcGIS.Geometry.ISpatialReferenceFactory
        pSpatRefFact = New ESRI.ArcGIS.Geometry.SpatialReferenceEnvironment

        Dim aParamArray(6) As ESRI.ArcGIS.Geometry.IParameter
        aParamArray(0) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_FalseEasting)
        aParamArray(0).Value = 0
        aParamArray(1) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_FalseNorthing)
        aParamArray(1).Value = 0
        aParamArray(2) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_CentralMeridian)
        aParamArray(2).Value = -96
        aParamArray(3) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_StandardParallel1)
        aParamArray(3).Value = 29.5
        aParamArray(4) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_StandardParallel2)
        aParamArray(4).Value = 45.5
        aParamArray(5) = pSpatRefFact.CreateParameter(ESRI.ArcGIS.Geometry.esriSRParameterType.esriSRParameter_CentralParallel)
        aParamArray(5).Value = 37.5