ArcGIS Engine中调用GP的两种方法

//添加命名空间
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geoprocessor;

//实现button click方法
private void button1_Click(object sender, EventArgs e)
{
//构造Geoprocessor
Geoprocessor gp = new Geoprocessor();
//设置参数
ESRI.ArcGIS.AnalysisTools.Intersect intersect = new ESRI.ArcGIS.AnalysisTools.Intersect();
intersect.in_features = @"F:\foshan\Data\wuqutu_b.shp;F:\foshan\Data\world30.shp";
intersect.out_feature_class = @"E:\intersect.shp";
intersect.join_attributes = "ONLY_FID";
//执行Intersect工具
RunTool(gp, intersect, null);
}

private void RunTool(Geoprocessor geoprocessor, IGPProcess process, ITrackCancel TC)
{
// Set the overwrite output option to true
geoprocessor.OverwriteOutput = true;

try
{
geoprocessor.Execute(process, null);
ReturnMessages(geoprocessor);

}
catch (Exception err)
{
Console.WriteLine(err.Message);
ReturnMessages(geoprocessor);
}
}

// Function for returning the tool messages.
private void ReturnMessages(Geoprocessor gp)
{
string ms = "";
if (gp.MessageCount > 0)
{
for (int Count = 0; Count <= gp.MessageCount - 1; Count++)
{
ms += gp.GetMessage(Count);
}
}

//1-定义GeoProcessor对象
Geoprocessor gp = new Geoprocessor();
object sev = null;
//2-设置参数
gp.OverwriteOutput = true;
//3-设置工具箱所在的路径
gp.AddToolbox(@"F:\lib_test\AirportsAndGolf.tbx");
//4-设置输入参数
IVariantArray parameters = new VarArrayClass();
parameters.Add(@"F:\lib_test\地下水重金属数据.xls\Sheet1$");
parameters.Add("`YEAR` = 2009");
parameters.Add("W20111");
parameters.Add(@"F:\lib_test\temp.gdb\tempwww");

//5-执行工具
gp.Execute("ModelAnalysis", parameters, null);

using ESRI.ArcGIS.Geoprocessor;
using ESRI.ArcGIS.AnalysisTools;

public void SampleBufferTool()
{

// Initialize the geoprocessor.
Geoprocessor GP = new Geoprocessor();

ESRI.ArcGIS.AnalysisTools.Buffer bufferTool = new
ESRI.ArcGIS.AnalysisTools.Buffer();

bufferTool.in_features = @"D:\St_Johns\data.mdb\roads_Buffer";
bufferTool.out_feature_class = @"D:\St_Johns\data.mdb\roads";
bufferTool.buffer_distance_or_field = "distance";

GP.Execute(bufferTool, null);

}

using ESRI.ArcGIS.Geoprocessor;
using ESRI.ArcGIS.esriSystem;

public void SampleCalculateBestPathTool()
{

// Initialize the geoprocessor.
Geoprocessor GP = new Geoprocessor();

// Add the BestPath toolbox.
GP.AddToolbox(@"C:\SanDiego\BestPath.tbx");

// Generate the array of parameters.
IVariantArray parameters = new VarArrayClass();
parameters.Add(@"C:\SanDiego\source.shp");
parameters.Add(@"C:\SanDiego\destination.shp");
parameters.Add(@"C:\SanDiego\bestpath.shp");

// Execute the model tool by name.
GP.Execute("CalculateBestPath", parameters, null);