/// <summary>
/// 获取Excel文件中指定工作表的列
/// </summary>
/// <param name="excelPath"></param>
/// <param name="eType"></param>
/// <param name="table"></param>
/// <returns></returns>
public static List <string> GetColumnsList(string excelPath, MdExcelHelper.ExcelType eType, string table)
{
string excelConnectstring = MdExcelHelper.GetExcelConnectstring(excelPath, true, eType);
DataTable readerSchema;
using (OleDbConnection oleDbConnection = new OleDbConnection(excelConnectstring))
{
oleDbConnection.Open();
readerSchema = MdExcelHelper.GetReaderSchema(table, oleDbConnection);
}
return((from DataRow dr in readerSchema.Rows
let columnName = dr["ColumnName"].ToString()
let datatype = ((OleDbType)dr["ProviderType"]).ToString()
let netType = dr["DataType"].ToString()
select columnName).ToList <string>());
}
/// <summary>
/// 返回Excel 连接字符串
/// </summary>
/// <param name="excelPath"></param>
/// <param name="header"></param>
/// <param name="eType"></param>
/// <param name="imex"></param>
/// <returns></returns>
public static string GetExcelConnectstring(string excelPath, bool header, MdExcelHelper.ExcelType eType, MdExcelHelper.IMEXType imex)
{
if (!MdFileHelper.IsExistFile(excelPath))
{
throw new FileNotFoundException("Excel路径不存在!");
}
string text = "NO";
if (header)
{
text = "YES";
}
string result;
if (eType == MdExcelHelper.ExcelType.Excel2003)
{
result = string.Concat(new object[]
{
"Provider=Microsoft.Jet.OleDb.4.0; data source=",
excelPath,
";Extended Properties='Excel 8.0; HDR=",
text,
"; IMEX=",
imex.GetHashCode(),
"'"
});
}
else
{
result = string.Concat(new object[]
{
"Provider=Microsoft.ACE.OLEDB.12.0; data source=",
excelPath,
";Extended Properties='Excel 12.0 Xml; HDR=",
text,
"; IMEX=",
imex.GetHashCode(),
"'"
});
}
return(result);
}
/// <summary>
/// 返回Excel工作表名
/// </summary>
/// <param name="excelPath"></param>
/// <param name="eType"></param>
/// <returns></returns>
public static List <string> GetExcelTablesName(string excelPath, MdExcelHelper.ExcelType eType)
{
string excelConnectstring = MdExcelHelper.GetExcelConnectstring(excelPath, true, eType);
return(MdExcelHelper.GetExcelTablesName(excelConnectstring));
}
/// <summary>
/// 返回Excel 连接字符串 [IMEX=1]
/// </summary>
/// <param name="excelPath"></param>
/// <param name="header"></param>
/// <param name="eType"></param>
/// <returns></returns>
public static string GetExcelConnectstring(string excelPath, bool header, MdExcelHelper.ExcelType eType)
{
return(MdExcelHelper.GetExcelConnectstring(excelPath, header, eType, MdExcelHelper.IMEXType.ImportMode));
}
/// <summary>
/// EXCEL所有工作表导入DataSet
/// </summary>
/// <param name="excelPath"></param>
/// <param name="header"></param>
/// <param name="eType"></param>
/// <returns></returns>
public static DataSet ExcelToDataSet(string excelPath, bool header, MdExcelHelper.ExcelType eType)
{
string excelConnectstring = MdExcelHelper.GetExcelConnectstring(excelPath, header, eType);
return(MdExcelHelper.ExcelToDataSet(excelConnectstring));
}
/// <summary>
/// 返回Excel第一个工作表表名
/// </summary>
/// <param name="excelPath"></param>
/// <param name="eType"></param>
/// <returns></returns>
public static string GetExcelFirstTableName(string excelPath, MdExcelHelper.ExcelType eType)
{
string excelConnectstring = MdExcelHelper.GetExcelConnectstring(excelPath, true, eType);
return(MdExcelHelper.GetExcelFirstTableName(excelConnectstring));
}
