Question

我正在尝试将excel文件中的数据转换为数据表。我的代码如下，我的错误是，＆＃34; IErrorInfo.GetDescription因E_FAIL（0x80004005）而失败。＆＃34;并且此错误发生在该行，＆＃34; dbAdapter.Fill（dt）;＆＃34;

    protected void uploadFile()
    {
        try
        {
            if (ctlFileUpload.HasFile)
            {
                string strFileType = System.IO.Path.GetExtension(ctlFileUpload.FileName).ToString().ToLower();
                if (strFileType == ".xls" || strFileType == ".xlsx")
                {
                    DataTable dt = new DataTable();
                    string strConn = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1;TypeGuessRows=0;ImportMixedTypes=Text\"", ctlFileUpload);

                    using (OleDbConnection dbConnection = new OleDbConnection(strConn))
                    {
                        using (OleDbDataAdapter dbAdapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", dbConnection)) //rename sheet if required!
                            dbAdapter.Fill(dt);
                        int rows = dt.Rows.Count;
                    }

                }
                else { throw new Exception("Excel File Only"); }
            }
        }
        catch (Exception ex)
        {

            if (ex.Message == "Incorrect Format")
            {
                lblStatusMessage.Text = "Excel is in an incorrect format, please use the template provided.";

            }
            else if (ex.Message == "Excel File Only")
            {
                lblStatusMessage.Text = "Only Excel files are allowed, please use the template provided.";
                return;
            }
            else
            {
                lblStatusMessage.Text = ex.Message;
                return;
            }
        }

    }

我上传的文件中没有任何空格，并且格式为.xlsx。任何帮助将不胜感激。

Answer 1

我认为您需要在连接字符串中使用之前保存该文件连接字符串也应该使用FileName属性而不是整个FileUpload控件

所以例如

....
if (ctlFileUpload.HasFile)
{
    string strFileType = System.IO.Path.GetExtension(ctlFileUpload.FileName).ToLower();
    if (strFileType == ".xls" || strFileType == ".xlsx")
    {
        string fileName = "/APP_DATA/" + ctlFileUpload.FileName;
        ctlFileUpload.SaveAs(fileName);

        string strConn = string.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;
                         Data Source={0};Extended Properties=\"Excel 12.0 Xml;
                         HDR=YES;IMEX=1;TypeGuessRows=0;ImportMixedTypes=Text\"", 
                         fileName);
    .....

尝试从Excel文件填充Datatable时出错

1 个答案: