从Excel读取时，外部表格不是预期的格式

问题描述

嗨朋友们，

我将数据导出到Excel（2003格式）。

但是当我尝试阅读相同的Excel时，我收到此错误

外部表格不符合预期格式



我的PC上安装了MS Office 2007。 />


当我打开Excel然后尝试读取它时，它工作正常，而预计它应该给我一个文件已被使用的错误信息。

（我想是的。如果我错了请告诉我）



这是我的代码所说的：

Hi Friends,
I am exporting data into Excel (2003 format).
But when I try to read the same Excel, I get this error
"External table is not in the expected format"

I have MS Office 2007 installed on my PC.

When I open that Excel and then try to read it, it works fine, whereas it is expected that it should give me error msg that the File is already being used.
(I think so. Please clear me if I am wrong)

Here is what my code says:

public enum ExcelVersion
{
            Excel,
            Excel2007
};
private string ProviderExcel = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=";
private string ExtendedPropertiesExcel = "Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\"";
private string ProviderExcel2007 = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=";
private string ExtendedPropertiesExcel2007 = "Extended Properties=\"Excel 12.0;HDR=YES\"";
private string mConnString = "";

On Button_Click甚至，我有..

On Button_Click Even, I have..

foreach (UploadedFile file in rdpUpload.UploadedFiles)
{
   FileName = file.GetName();
   sExtension = file.GetName();
   sExtension = sExtension.Substring(sExtension.LastIndexOf(".") + 1);
   if (sExtension != "xls")
     throw new System.Exception("Select .xls/.xlsx file ");
                    ExcelImport(ExcelVersion.Excel, FilePath + "//" + FileName);
                    GetPaymentVouchers();
}

这些是我的方法

And these are my methods

public void ExcelImport(ExcelVersion ver, string FilePath)
{
	switch (ver)
        {
                case ExcelVersion.Excel:
                    mConnString = ProviderExcel + FilePath + ";" + ExtendedPropertiesExcel;
                    break;
                case ExcelVersion.Excel2007:
                    mConnString = ProviderExcel2007 + FilePath + ";" + ExtendedPropertiesExcel2007;
                    break;
         }
}
public void GetPaymentVouchers()
{
	OleDbConnection cn = new OleDbConnection(mConnString);
        try
        {
                cn.Open();
                DataTable schemaTable = cn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
                string SheetName = schemaTable.Rows[0][2].ToString();
                StringBuilder SelectStatement = new StringBuilder();
                SelectStatement.Append("SELECT * FROM [").Append(SheetName).Append("]");
                OleDbDataAdapter da = new OleDbDataAdapter(SelectStatement.ToString(), cn);
                DataSet ds = new DataSet();
                da.Fill(ds);
         }
         catch (Exception ex)
         {
                XITingExceptionProcessor.ProcessException(this, ex);
         }
         finally
         {
                cn.Close();
         }
}

请帮帮我朋友。

谢谢，

Lok ..

Please help me out friends.
Thanks,
Lok..

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