从Excel工作表C＃中读取

Question

I am trying to read an excel sheet using this code

Dictionary<string, DataTable> tables = new Dictionary<string, DataTable>();//Microsoft.Jet.OLEDB.4.0 
string sConnection = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 12.0;HDR=yes'", filePath);
OleDbConnection oleExcelConnection = new OleDbConnection(sConnection);

foreach(string sheet in Sheets)
{
    DataTable dt = GetDataTable("SELECT * from [" + sheet + "$]", sConnection);

    tables.Add(sheet, dt); 
}

After I run it got this exception The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.

and I downloaded the component from here ' https://www.microsoft.com/en-us/download/confirmation.aspx?id=23734 ' and worked correctly but when I deploy it it doesn't work anyone can help ?

Answer 1

Please use execlDatareader for nugget package and use this code .Please change path to user file location.

execldatareader work everywhere but ole db must be installed on machine if u goes live with ole db can give u error.

string path1 = Path.Combine(HttpContext.Server.MapPath("~/App_Data/" + sessionManagement.GetUserId()), Path.GetFileName(model.FileName));
                FileStream stream = System.IO.File.Open(path1, FileMode.Open, FileAccess.Read);

                IExcelDataReader reader = null;
                DataSet result = new DataSet();
                try
                {
                    if (path1.EndsWith(".xls"))
                    {
                        reader = ExcelReaderFactory.CreateBinaryReader(stream);
                        reader.IsFirstRowAsColumnNames = true;
                    }
                    if (path1.EndsWith(".xlsx"))
                    {
                        reader = ExcelReaderFactory.CreateOpenXmlReader(stream);
                        reader.IsFirstRowAsColumnNames = true;
                    }
                    result = reader.AsDataSet();
                    reader.Close();
                }
                catch (Exception ex)
                {
                    Dispose();
   }
                DataTable dt = result.Tables[0];

Answer 2

Your MS ACE driver version (x86 / x64) must match targeted platform of your VS solution. Click on Project menu>Properties. Select "Build" tab. On your screen, locate a.combobox placed immediate right of label [Platform target:].change value of combobox from "Any CPU" to x86 or x64 whichever version you have and you will get rid of that error.