//开始计算
private void Btn_Compute_Click(object sender, EventArgs e)
{
string tpFiledName = this.CB_Fields.Text;
object obj = this.comboBox1.SelectedItem;
if (obj != null && obj is CommonComboBoxItem)
{
CommonComboBoxItem item = obj as CommonComboBoxItem;
IFeatureClass pFeatureClass = item.Tag as IFeatureClass;
decimal ellipseArea = 0;
AnyTrapeziaEllipseAreaCompute_JF jf = new AnyTrapeziaEllipseAreaCompute_JF();
//获取坐标系
jf.Datum = EnumProjectionDatum.CGCS2000;
if (this.rb2000.Checked == true)
{
jf.Datum = EnumProjectionDatum.CGCS2000;
}
if (this.rb_xian80.Checked == true)
{
jf.Datum = EnumProjectionDatum.Xian80;
}
if (this.rb_beijing54.Checked == true)
{
jf.Datum = EnumProjectionDatum.Bejing54;
}
//获取大数设置
jf.IsBigNumber = false;
if (this.CB_IsBigNumber.Checked == true)
{
jf.IsBigNumber = true;
}
//获取分度设置
jf.Strip = EnumStrip.Strip6;
if (CB_FD.Checked == true)
{
jf.Strip = EnumStrip.Strip3;
}
//获取中央子午线
jf.L0 = CommonClass.TDec(this.txt_DD.Text) * (int)jf.Strip;
int fIndex = 0;
int tmpFCount = pFeatureClass.FeatureCount(null);
frmProgressBar1 pb = new frmProgressBar1();
pb.Text = "正在进行椭球面积计算...";
pb.KDCaption1 = "正在进行椭球面积计算...";
pb.KDProgressBar1.Maximum = tmpFCount + 1;
pb.KDProgressBar1.Value = 0;
pb.Show();
Application.DoEvents();
IFeatureCursor fcur = pFeatureClass.Update(null, false);
IFeature feat = fcur.NextFeature();
while (feat != null)
{
fIndex += 1;
if (fIndex % 500 == 0)
{
pb.KDCaption1 = "已计算完成要素个数:" + fIndex.ToString() + "/总" + tmpFCount.ToString();
pb.KDProgressBar1.Value = fIndex;
Application.DoEvents();
fcur.Flush();
}
ellipseArea = jf.Compute(feat.ShapeCopy);
//save ellipseArea...
ZhFeature zhfeat = new ZHFeaturePolygon(feat);
zhfeat.setFieldValue(tpFiledName, ellipseArea);
fcur.UpdateFeature(feat);
feat = fcur.NextFeature();
}
fcur.Flush();
TokayWorkspace.ComRelease(fcur);
fcur = null;
pb.Close();
pb.Dispose();
pb = null;
MessageBox.Show(this, "计算椭球面积完毕!", "提示");
}
}
//开始计算
private void Btn_Compute_Click(object sender, EventArgs e)
{
try
{
this.Btn_Compute.Enabled = false;
this.Cursor = Cursors.WaitCursor;
string tpFileName = this.textBox1.Text;
if (tpFileName == "" || System.IO.File.Exists(tpFileName) == false)
{
MessageBox.Show("需先选择一个shp文件", "提示");
return;
}
string tpFiledName = this.CB_Fields.Text;
string[] sArray = tpFileName.Split('\\');
string filename = sArray[sArray.Length - 1];
string url = "";
for (int i = 0; i < sArray.Length - 1; i++)
{
url = url + sArray[i] + "\\";
}
string[] sFile = filename.Split('.');
string file_ext = "";
if (sFile.Length > 0)
{
file_ext = sFile[sFile.Length - 1];
}
file_ext = file_ext.ToLower();
//----
ShapefileWorkspaceFactoryClass wsf = new ShapefileWorkspaceFactoryClass();
IWorkspace ws = wsf.OpenFromFile(url, 0);
IFeatureWorkspace pFeatureWorkspace;
pFeatureWorkspace = (IFeatureWorkspace)ws;
IFeatureClass pFeatureClass = null;
pFeatureClass = pFeatureWorkspace.OpenFeatureClass(filename);
decimal ellipseArea = 0;
AnyTrapeziaEllipseAreaCompute_JF jf = new AnyTrapeziaEllipseAreaCompute_JF();
jf.Datum = EnumProjectionDatum.Bejing54;
if (CB_Datum.Checked == true)
{
jf.Datum = EnumProjectionDatum.Xian80;
}
jf.IsBigNumber = false;
if (this.CB_IsBigNumber.Checked == true)
{
jf.IsBigNumber = true;
}
jf.Strip = EnumStrip.Strip6;
if (CB_FD.Checked == true)
{
jf.Strip = EnumStrip.Strip3;
}
jf.L0 = CommonClass.TDec(this.txt_DD.Text) * (int)jf.Strip;
int fIndex = 0;
int tmpFCount = pFeatureClass.FeatureCount(null);
frmProgressBar1 pb = new frmProgressBar1();
pb.Text = "正在进行椭球面积计算...";
pb.Caption1.Text = "正在进行椭球面积计算...";
pb.progressBar1.Maximum = tmpFCount + 1;
pb.progressBar1.Value = 0;
pb.Show();
Application.DoEvents();
IFeatureCursor fcur = pFeatureClass.Update(null, false);
IFeature feat = fcur.NextFeature();
while (feat != null)
{
fIndex += 1;
if (fIndex % 500 == 0)
{
pb.Caption1.Text = "已计算完成要素个数:" + fIndex.ToString() + "/总" + tmpFCount.ToString();
pb.progressBar1.Value = fIndex;
Application.DoEvents();
fcur.Flush();
}
ellipseArea = jf.Compute(feat.ShapeCopy);
//save ellipseArea...
ZhFeature zhfeat = new ZHFeaturePolygon(feat);
zhfeat.setFieldValue(tpFiledName, ellipseArea);
zhfeat.setFieldValue("TXMJ", zhfeat.GeometryArea);
fcur.UpdateFeature(feat);
//zhfeat.SaveFeature();
feat = fcur.NextFeature();
}
fcur.Flush();
TokayWorkspace.ComRelease(fcur);
fcur = null;
TokayWorkspace.ComRelease(ws);
ws = null;
pb.Close();
pb.Dispose();
pb = null;
MessageBox.Show(this, "计算椭球面积完毕!", "提示");
}
catch (Exception ee)
{
Log.WriteLine(ee);
MessageBox.Show(this, ee.Message, "提示");
}
finally
{
this.Btn_Compute.Enabled = true;
this.Cursor = Cursors.Default;
}
}