Using the Geoprocessor task - what you need to know

There are three things that you need to know when using a geoprocessing service:

• First, you need to know the URL where the model is located. An example URL is provided as follows. To make a model available through ArcGIS Server, you publish the toolbox that contains it. A toolbox can contain more than one model and so, therefore, can the geoprocessing service. For example, the following URL references the PopulationSummary model in the ESRI_Population_World geoprocessing service: http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Population_World/GPServer/PopulationSummary.
• You need to know what input parameters are required by the model, and what type of data is returned.
• Finally, you need to know whether the task is asynchronous or synchronous because this will affect how you write your code.

All of this information can be found on the services page for the geoprocessing task: