Oledb异常-在上传excel文件时定义了太多字段

Question

这是我的代码上传excel......

if (RevenueDumpFileUpload.HasFile)
        {
            string strFilePathOnServer = ConfigurationManager.AppSettings["RevenueDumpFileLocation"];
            String sConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath(strFilePathOnServer) + RevenueDumpFileUpload.FileName + ";Extended Properties="Excel 8.0;IMEX=1;HDR=NO;TypeGuessRows=0;ImportMixedTypes=Text"";
            string strPostedFileName = RevenueDumpFileUpload.PostedFile.FileName;
            if (strPostedFileName != string.Empty && RevenueDumpFileUpload.PostedFile.ContentLength != 0)
            {
                //Save-Upload File to server. 
                RevenueDumpFileUpload.PostedFile.SaveAs(Server.MapPath(strFilePathOnServer) + RevenueDumpFileUpload.FileName);
                RevenueDumpFileUpload.FileContent.Dispose();
            }
            OleDbConnection Exlcon = new OleDbConnection(sConnectionString);
            try
            {
                //Exlcon.Open();
            }
            catch
            {
                return;
            }
            OleDbCommand objCmdSelect = new OleDbCommand("SELECT * FROM [Owner$]", Exlcon);
            OleDbDataAdapter objAdapter1 = new OleDbDataAdapter();
            objAdapter1.SelectCommand = objCmdSelect;
            objDataset1.Clear();
            objAdapter1.Fill(objDataset1, "XLData");
            DataRow rowDel = objDataset1.Tables["XLData"].Rows[0];
            objDataset1.Tables["XLData"].Rows.Remove(rowDel);
            objDataset1.Tables["XLData"].Columns[0].ColumnName = "Industry";
            objDataset1.Tables["XLData"].Columns[1].ColumnName = "Company Name";
            objDataset1.Tables["XLData"].Columns[2].ColumnName = "Website";
            objDataset1.Tables["XLData"].Columns[3].ColumnName = "Address";
            objDataset1.Tables["XLData"].Columns[4].ColumnName = "State";
            objDataset1.Tables["XLData"].Columns[5].ColumnName = "Company PhoneNumber";
            objDataset1.Tables["XLData"].Columns[6].ColumnName = "Contact Person";
            objDataset1.Tables["XLData"].Columns[7].ColumnName = "Title Description";
            objDataset1.Tables["XLData"].Columns[8].ColumnName = "Company Size";
            objDataset1.Tables["XLData"].Columns[9].ColumnName = "Mail ID";
            objDataset1.Tables["XLData"].Columns[10].ColumnName = "Guess MailID";
            objDataset1.Tables["XLData"].Columns[11].ColumnName = "Phone No";
            objDataset1.Tables["XLData"].Columns[12].ColumnName = "Linked in id";
            objDataset1.Tables["XLData"].Columns[13].ColumnName = "Comment";
            methodtosave();
        }

我得到错误填充方法…"太多字段未定义"。只有"14"列.....

Answer 1

请参阅下面的代码，尝试在如下所示的选择字符串中给出所有locums，并检查连接字符串。

string sql = "SELECT F1, F2, F3, F4, F5 FROM [sheet1$] WHERE F1 IS NOT NULL";
OleDbConnection connection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + PrmPathExcelFile + @";Extended Properties=""Excel 8.0;IMEX=1;HDR=NO;TypeGuessRows=0;ImportMixedTypes=Text""");
OleDbCommand cmd = new OleDbCommand(sql, connection);
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
ds.Tables.Add("xlsImport", "Excel");
da.Fill(ds, "xlsImport");
// Remove the first row (header row)
DataRow rowDel = ds.Tables["xlsImport"].Rows[0];
ds.Tables["xlsImport"].Rows.Remove(rowDel);
ds.Tables["xlsImport"].Columns[0].ColumnName = "LocationID";
ds.Tables["xlsImport"].Columns[1].ColumnName = "PartID";
ds.Tables["xlsImport"].Columns[2].ColumnName = "Qty";
ds.Tables["xlsImport"].Columns[3].ColumnName = "UserNotes";
ds.Tables["xlsImport"].Columns[4].ColumnName = "UserID";
connection.Close(); 
  var data = ds.Tables["xlsImport"].AsEnumerable();
    var query = data.Where(x => x.Field<string>("LocationID") == "COOKCOUNTY").Select(x =>
                new Contact
                {
                    LocationID= x.Field<string>("LocationID"),
                    PartID = x.Field<string>("PartID"),
                    Quantity = x.Field<string>("Qty"),
                    Notes = x.Field<string>("UserNotes"),
                    UserID = x.Field<string>("UserID")
                });

OleDB,混合Excel数据类型:缺少数据

Answer 2

错误是说字段是未定义的，所以我认为你的数据表至少有一些行的宽度超过14列。Excel可以很有趣，因为一个空的但初始化的单元格被认为是一个数据单元格。

看看objDataset1.Tables["XLData"].Columns.Count，看看它返回了什么。您可能需要在列名分配结束时添加一个函数，该函数循环其余列并分配任意名称(column{x})。

您也可以将选择语句更改为只检索前14行，而不是选择*。

Answer 3

我认为问题是在你的数据集。objDataset1.Clear();只是清除数据，而不是结构。尝试使用objDataset1 = new DataSet();

编辑:

尝试使用连接字符串:

@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" 
            + Server.MapPath(strFilePathOnServer) 
            + RevenueDumpFileUpload.FileName 
            + ";Extended Properties="Excel 8.0;HDR=Yes;IMEX=1"";