ArcEngine匯出shp屬性表至Excel
阿新 • • 發佈:2018-12-06
開發環境:VS2013 + NPOI + ArcEngine 10.4
鑑於VS自帶的Office匯出Excel速度太慢,因此採用NPOI實現~(NPOI真TM快!!!)
/// <summary>
/// 獲取要素類
/// </summary>
/// <param name="filePath"></param>
/// <returns></returns>
private static IFeatureClass GetFeatureClass(string filePath)
{
IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();
IWorkspaceFactoryLockControl pWorkspaceFactoryLockControl = pWorkspaceFactory as IWorkspaceFactoryLockControl;
if (pWorkspaceFactoryLockControl.SchemaLockingEnabled)
{
pWorkspaceFactoryLockControl.DisableSchemaLocking();
}
IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(filePath), 0 );
IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;
IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass(System.IO.Path.GetFileName(filePath));
return pFeatureClass;
}
/// <summary>
/// 獲取要素屬性表
/// </summary>
/// <param name="pFeatureClass"></param>
/// <returns></returns>
private static DataTable GetAttributesTable(IFeatureClass pFeatureClass)
{
string geometryType = string.Empty;
if (pFeatureClass.ShapeType == esriGeometryType.esriGeometryPoint)
{
geometryType = "點";
}
if (pFeatureClass.ShapeType == esriGeometryType.esriGeometryMultipoint)
{
geometryType = "點集";
}
if (pFeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline)
{
geometryType = "折線";
}
if (pFeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon)
{
geometryType = "面";
}
// 欄位集合
IFields pFields = pFeatureClass.Fields;
int fieldsCount = pFields.FieldCount;
// 寫入欄位名
DataTable dataTable = new DataTable();
for (int i = 0; i < fieldsCount; i++)
{
dataTable.Columns.Add(pFields.get_Field(i).Name);
}
// 要素遊標
IFeatureCursor pFeatureCursor = pFeatureClass.Search(null, true);
IFeature pFeature = pFeatureCursor.NextFeature();
if (pFeature == null)
{
return dataTable;
}
// 獲取MZ值
IMAware pMAware = pFeature.Shape as IMAware;
IZAware pZAware = pFeature.Shape as IZAware;
if (pMAware.MAware)
{
geometryType += " M";
}
if (pZAware.ZAware)
{
geometryType += "Z";
}
// 寫入欄位值
while (pFeature != null)
{
DataRow dataRow = dataTable.NewRow();
for (int i = 0; i < fieldsCount; i++)
{
if (pFields.get_Field(i).Type == esriFieldType.esriFieldTypeGeometry)
{
dataRow[i] = geometryType;
}
else
{
dataRow[i] = pFeature.get_Value(i).ToString();
}
}
dataTable.Rows.Add(dataRow);
pFeature = pFeatureCursor.NextFeature();
}
// 釋放遊標
System.Runtime.InteropServices.Marshal.ReleaseComObject(pFeatureCursor);
return dataTable;
}
/// <summary>
/// 生成Excel檔案
/// </summary>
/// <param name="dataTable"></param>
/// <param name="filePath"></param>
private static void CreateExcelFile(DataTable dataTable, string filePath)
{
NPOI.SS.UserModel.IWorkbook workbook = null;
if (System.IO.Path.GetExtension(filePath) == ".xls")
{
workbook = new NPOI.HSSF.UserModel.HSSFWorkbook();
}
else
{
workbook = new NPOI.XSSF.UserModel.XSSFWorkbook();
}
// 建立行
NPOI.SS.UserModel.ISheet sheet = workbook.CreateSheet("屬性表");
NPOI.SS.UserModel.IRow row = sheet.CreateRow(0);
NPOI.SS.UserModel.ICell cell = null;
// 寫入列名
int columnCount = dataTable.Columns.Count;
for (int i = 0; i < columnCount; i++)
{
cell = row.CreateCell(i);
cell.SetCellValue(dataTable.Columns[i].ColumnName);
}
// 寫入列值
int rowCount = dataTable.Rows.Count;
for (int i = 0; i < rowCount; i++)
{
row = sheet.CreateRow(i + 1);
for (int j = 0; j < columnCount; j++)
{
cell = row.CreateCell(j);
cell.SetCellValue(dataTable.Rows[i][j].ToString());
}
}
// 寫入檔案
System.IO.FileStream fileStream = new System.IO.FileStream(filePath, System.IO.FileMode.Create);
workbook.Write(fileStream);
workbook.Close();
fileStream.Close();
}
/// <summary>
/// 建立Excel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnCreateExcelFile_Click(object sender, EventArgs e)
{
IFeatureClass pFeatureClass = GetFeatureClass(@"C:\Users\DSF\Desktop\data\ZD.shp");
DataTable dataTable = GetAttributesTable(pFeatureClass);
CreateExcelFile(dataTable, @"C:\Users\DSF\Desktop\test.xls");
}
執行結果:匯出31448條要素屬性耗時大約3.3s