C#调用Warp工具操作栅格，结果没有任何改变

ESRI.ArcGIS.DataManagementTools.Warp warp = new ESRI.ArcGIS.DataManagementTools.Warp();

warp.in_raster = pMosaicToNewRaster.output_raster_dataset;

warp.source_control_points = string.Format("\'{0} {1}\';\'{2} {3}\'", extent.XMin, extent.YMax, extent.XMax, extent.YMin);

warp.target_control_points = string.Format("\'{0} {1}\';\'{2} {3}\'",X1,Y1,X2,Y2);

warp.out_raster = System.IO.Path.Combine(m_outputDir, strTempImage_R);

warp.resampling_type = "SPLINE";

warp.resampling_type = "BILINEAR";



IGeoProcessorResult geoRes = m_pGeoProc.Execute(warp, null) as IGeoProcessorResult;

if (geoRes.Status != ESRI.ArcGIS.esriSystem.esriJobStatus.esriJobSucceeded)

{

    MessageBox.Show("修正范围出错,请确定格网大小和起始坐标正确");

    return;

}