/// <summary>
/// 从 Excel 文件中读取指定工作表的数据，转换成 DataTable
/// </summary>
/// <param name="fileName">Excel文件名</param>
/// <returns></returns>
private DataTable ExcelSheet2DataTable(string fileName)
{
string strProcedureName =
$"{className}.{MethodBase.GetCurrentMethod().Name}";
WriteLog.Instance.WriteBeginSplitter(strProcedureName);
if (!File.Exists(fileName))
{
string errText =
string.Format(
"没有找到文件 [{0}]。", fileName);
WriteLog.Instance.Write(errText, strProcedureName);
throw BuildErrorObject(-1, errText);
}
try
{
DataSet ds = new DataSet();
string sheetName = GetExcelFirstSheetName(fileName);
if (sheetName == "")
{
return(null);
}
using (TExcelHelper excel = new TExcelHelper(fileName))
{
return(excel.ExcelToDataTable(sheetName, true));
}
}
catch (Exception error)
{
WriteLog.Instance.Write(error.Message, strProcedureName);
throw BuildErrorObject(-1, error.Message);
}
finally
{
WriteLog.Instance.WriteEndSplitter(strProcedureName);
}
}
/// <summary>
/// 从 Excel 文件中获取 Sheet 名集合，从中选择一个 Sheet 名返回
/// </summary>
/// <param name="fileName">Excel 文件名</param>
/// <returns></returns>
private string GetExcelFirstSheetName(string fileName)
{
string strProcedureName =
$"{className}.{MethodBase.GetCurrentMethod().Name}";
using (TExcelHelper excel = new TExcelHelper(fileName))
{
WriteLog.Instance.WriteBeginSplitter(strProcedureName);
try
{
List <string> sheetNames = excel.GetExcelSheetNames();
using (Dialogs.frmSelectExcelSheet selectSheet =
new Dialogs.frmSelectExcelSheet(sheetNames))
{
if (selectSheet.ShowDialog() == DialogResult.OK)
{
return(selectSheet.SelectSheetName);
}
else
{
return("");
}
}
}
catch (Exception error)
{
WriteLog.Instance.Write(error.Message, strProcedureName);
throw BuildErrorObject(-1, error.Message);
}
finally
{
WriteLog.Instance.WriteEndSplitter(strProcedureName);
}
}
}
