Executing a system tool

Executing a system tool

The following code example shows the execution of the Buffer tool from the Analysis tools toolbox. The required parameters for the tool are defined. In this case, strings are used to define the input, output, and buffer distance properties so the call to the tool is easier to read.
[C#]
// Add references to esriSystem for licensing and IVariantArray.
using ESRI.ArcGIS.esriSystem;
// Add a reference to the geoprocessing namespace.
using ESRI.ArcGIS.Geoprocessing;

private static void RunBuffer()
{
    // Create the geoprocessor.
    IGeoProcessor2 gp = new GeoProcessorClass();

    // Create an IVariantArray to hold the parameter values.
    IVariantArray parameters = new VarArrayClass();

    // Populate the variant array with parameter values.
    parameters.Add(@"D:\St_Johns\data.mdb\roads");
    parameters.Add(@"D:\St_Johns\data.mdb\roads_Buffer");
    parameters.Add("1000 Meters");

    // Execute the tool.
    gp.Execute("Buffer_analysis", parameters, null);
}