//快速叠加传值功能
private void QuickOverlapTranValue()
{
IFeatureCursor fcur = null;
mdbAccessLayerClass mdbOp = null;
frmProgressBar1 pb = null;
try
{
this.button1.Enabled = false;
this.Cursor = Cursors.WaitCursor;
//获取参数
string updateField = this.CB_Fields1.Text.Trim();
string valFromField = this.CB_Fields2.Text.Trim();
pb = new frmProgressBar1();
pb.Text = "空间叠加传值进度...";
pb.Caption1.Text = "预处理中...";
pb.progressBar1.Maximum = 10;
pb.progressBar1.Value = 0;
pb.Show(this);
Application.DoEvents();
//1 获取和生成临时空间数据库
string tmpdir = Application.StartupPath + "\\TmpDir";
if (System.IO.Directory.Exists(tmpdir) == false)
{
System.IO.Directory.CreateDirectory(tmpdir);
}
this.tmpMdbFilePath = tmpdir + "\\GeoTransValue.mdb";
if (System.IO.File.Exists(this.tmpMdbFilePath) == true)
{
CommonClass.DeleteFile(this.tmpMdbFilePath);
}
//--
TokayWorkspace.CreateGeodatabase(this.tmpMdbFilePath);
//2 开始空间叠加操作
pb.Caption1.Text = "空间叠加中...";
pb.progressBar1.Value += 1;
Application.DoEvents();
//两个图层作叠加相交运算输出到一个mdb空间数据库中
string FID_fcName1 = "";
string fcName1 = "";
string fcName2 = "";
string fd_Shape_Area = "shape_area";
IFeatureClass fc1 = null;
IFeatureClass fc2 = null;
//目标图层
object obj = this.CB_LayerList1.SelectedItem;
if (obj != null && obj is CommonComboBoxItem)
{
CommonComboBoxItem item = obj as CommonComboBoxItem;
fc1 = item.Tag as IFeatureClass;
fcName1 = (fc1 as IDataset).Name;
}
//源图层
obj = this.CB_LayerList2.SelectedItem;
if (obj != null && obj is CommonComboBoxItem)
{
CommonComboBoxItem item = obj as CommonComboBoxItem;
fc2 = item.Tag as IFeatureClass;
fcName2 = (fc2 as IDataset).Name;
fd_Shape_Area = fc2.ShapeFieldName + "_area";
}
//生成的相交图层名称
tmpLayerName = fcName1 + "_" + fcName2;
FID_fcName1 = "FID_" + fcName1;
double TopoTolerance = 0.0001;
IntersectCalculateMdbEx mdbIsCal = new IntersectCalculateMdbEx();
if (mdbIsCal.Execute(fc1, fc2, this.tmpMdbFilePath + "\\" + tmpLayerName, "INPUT", TopoTolerance) == true)
{
#region 空间传值中
pb.Caption1.Text = "空间传值中...";
pb.progressBar1.Value += 1;
Application.DoEvents();
//
ZhFeature zhfeat = null;
int index_fc1 = fc1.Fields.FindField(valFromField);
if (index_fc1 >= 0)
{
valFromField = valFromField + "_1";
}
mdbOp = new mdbAccessLayerClass(this.tmpMdbFilePath);
string x = "select " + FID_fcName1 + "," + valFromField + ",sum(" + fd_Shape_Area + ") as geo_area ";
x += " from " + tmpLayerName + " ";
x += " group by " + FID_fcName1 + "," + valFromField + "";
DataTable dt = mdbOp.GetMdbDB.ExecuteDataTable(x);
if (dt != null && dt.Rows.Count > 0)
{
#region 值中
string oid = "";
int fc1_count = 0;
int index = 0;
string objval = "";
double geo_area = 0.0;
double geo_area_max = 0.0;
//更新值
fc1_count = fc1.FeatureCount(null);
pb.progressBar1.Value = 0;
pb.progressBar1.Maximum = fc1_count + 1;
Application.DoEvents();
//
fcur = fc1.Update(null, false);
IFeature feat = fcur.NextFeature();
while (feat != null)
{
index += 1;
if (index % 50 == 0)
{
pb.Caption1.Text = "空间叠加传值中...第[" + index + "]个/共[" + fc1_count + "]个";
pb.progressBar1.Value = index;
Application.DoEvents();
fcur.Flush();
}
zhfeat = new ZHFeaturePolygon(feat);
oid = zhfeat.getObjectID();
//
DataRow[] drArray = dt.Select(FID_fcName1 + "=" + oid);
if (drArray != null && drArray.Length >= 1)
{
objval = "";
geo_area = 0.0;
geo_area_max = 0.0;
//获取面积最大的面积值
foreach (DataRow dr in drArray)
{
geo_area = CommonClass.TNum(dr["geo_area"].ToString());
if (geo_area >= geo_area_max)
{
objval = dr[valFromField].ToString();
geo_area_max = geo_area;
}
}
//设置值
zhfeat.setFieldValue(updateField, objval);
fcur.UpdateFeature(feat);
}
feat = fcur.NextFeature();
}
fcur.Flush();
if (fcur != null)
{
TokayWorkspace.ComRelease(fcur);
fcur = null;
}
#endregion
}
if (mdbOp != null)
{
mdbOp.GetMdbDB.Dispose();
mdbOp = null;
}
#endregion
if (pb != null)
{
pb.Close();
pb.Dispose();
pb = null;
}
MessageBox.Show("传值完毕!", "提示");
}
else
{
MessageBox.Show("空间叠加失败!" + mdbIsCal.Message, "提示");
}
}
catch (Exception ee)
{
Log.WriteLine(ee);
MessageBox.Show(ee.Message, "提示");
}
finally
{
this.button1.Enabled = true;
this.Cursor = Cursors.Default;
if (fcur != null)
{
TokayWorkspace.ComRelease(fcur);
fcur = null;
}
if (mdbOp != null)
{
mdbOp.GetMdbDB.Dispose();
mdbOp = null;
}
if (pb != null)
{
pb.Close();
pb.Dispose();
pb = null;
}
}
}