Question

Excel表格中有三列：

公司名称
PHONENO
EMAILID

当我尝试从Excel获取数据时，如果工作表在012-231564列中包含PhoneNo类型的数据，则生成的DataSet包含空白单元格

var connString = string.Format("Provider=Microsoft.Jet.OleDb.4.0;
Data Source={0};Extended Properties=\"Text;HDR=YES;FMT=Delimited\"",
Path.GetDirectoryName(Server.MapPath("~/DataMiningFiles/" +    StrFileName)));

var query = "SELECT * FROM [" + Path.GetFileName(Server.MapPath("~/DataMiningFiles/" + StrFileName)) + "]";

using (var adapter = new OleDbDataAdapter(query, conn)) { 
    var ObjGetExcelData = new DataSet("CSV File");
    adapter.Fill(ObjGetExcelData); 
}

Answer 1

我有很多改变这个tbh。所以，让我们看看......

我不会使用该驱动程序，因为它是obselete。使用Microsoft.ACE.OLEDB.12.0
您需要指定IMEX = 1才能导入混合数据类型。
您的扩展属性指定了文本文件导入，但您已经说过要导入Excel。如果是这样，请指定。

一般情况下我会逐桌阅读此表。我不熟悉您将该批次读入DataSet的尝试。如果我在新的一年里感到无聊，我可能会有所作为。然而，这个例子将起作用......

string sConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" +
                           "Data Source=e:\\Test.xlsx;" +
                           "Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=1\"";

OleDbConnection oConnection = new OleDbConnection();
oConnection.ConnectionString = sConnectionString;
oConnection.Open();

//Find all readable Named Ranges and Worksheets
DataTable ExcelSheetNames = oConnection.GetSchema("Tables");

foreach (DataRow SheetNameRow in ExcelSheetNames.Rows)
{
    string SheetName = (string)SheetNameRow["Table_Name"];

    //Only handle WorkSheets. Named Ranges are otherwise named.
    if (SheetName.EndsWith("$") | SheetName.EndsWith("$'"))
    {
        DataTable SheetContents = new DataTable();

        //Read the contents of the sheet into a DataTable
        using (OleDbCommand oCmd = new OleDbCommand("Select * From [" + SheetName + "]", oConnection))
        {
            SheetContents.Load(oCmd.ExecuteReader());
        }

        //You can also put the DataTable load on one line (I do)
        //SheetContents.Load(new OleDbCommand("Select * From [" + SheetName + "]", oConnection).ExecuteReader());

        //Print the content of cells A2..C2 to the console window
        Console.WriteLine(SheetContents.Rows[0].ItemArray[0]);
        Console.WriteLine(SheetContents.Rows[0].ItemArray[1]);
        Console.WriteLine(SheetContents.Rows[0].ItemArray[2]);

   }
}

oConnection.Close();

顺便提一下，请尽量避免使用＆＃34; var＆＃34;变量。强力打字，你以后会为自己和别人留下更多心痛。

如果您知道要阅读的工作表的名称，可以将其全部编码为...

    string sConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" +
                               "Data Source=e:\\Test.xlsx;" +
                               "Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=1\"";

    OleDbConnection oConnection = new OleDbConnection();
    oConnection.ConnectionString = sConnectionString;
    oConnection.Open();

    DataTable SheetContents = new DataTable();

    SheetContents.Load(new OleDbCommand("Select * From [Sheet1$]", oConnection).ExecuteReader());

    Console.WriteLine(SheetContents.Rows[0].ItemArray[0]);
    Console.WriteLine(SheetContents.Rows[0].ItemArray[1]);
    Console.WriteLine(SheetContents.Rows[0].ItemArray[2]);

    oConnection.Close();

从Excel中检索数据包含使用OLEDB C＃的特殊字符

1 个答案: