异常详细信息:System.Web.HttpException:超出最大请求长度

Question

我试图使用下面的代码将Excel文件中的数据读入ADO.NET数据集.在Windows窗体应用程序中它可以工作,但在asp.net应用程序中它失败了.

 public static DataTable ArchiveData(string fileName)
{
    FileStream stream = File.Open(fileName, FileMode.Open, FileAccess.Read);

    //Reading from a OpenXml Excel file (2007 format; *.xlsx)
    IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);
    excelReader.IsFirstRowAsColumnNames = true;

    DataSet result = excelReader.AsDataSet();

    //Free resources (IExcelDataReader is IDisposable)
    excelReader.Close();
    return result.Tables["Archive data"];
}

堆栈跟踪:

[HttpException (0x80004005): Maximum request length exceeded.]
   System.Web.HttpRequest.GetEntireRawContent() +8793522
   System.Web.HttpRequest.GetMultipartContent() +62
   System.Web.HttpRequest.FillInFormCollection() +236
   System.Web.HttpRequest.get_Form() +68
   System.Web.HttpRequest.get_HasForm() +8745879
   System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +97
   System.Web.UI.Page.DeterminePostBackMode() +63
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +133

或者有更好的方法从客户端计算机读取Excel文件到ASP.NET中的ADO.NET DataTable

Answer 1

在web.config文件中添加以下标记,并检查它是否有效

<httpRuntime maxRequestLength="350000" enableVersionHeader="false" maxQueryStringLength="3584" executionTimeout="600"/>