C# 两个程序试图读取excel，一个成功，一个失败，代码相同

我有两个互不相关的程序，但它们有一个相同的方法，它们试图从excel文件中读取行

方案1

    public DataTable GetExcelInfo(string filepath)
    {
        DataTable datatab = new DataTable();
        try
        {
            string connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Excel 8.0;IMEX=1;HDR=NO;TypeGuessRows=1;ImportMixedTypes=Text\\";
            using (OleDbConnection conn = new OleDbConnection(connectionString))
            {
                conn.Open();
                OleDbCommand cmd = new OleDbCommand("SELECT Format([F1], \"#\"), Format([F2], \"#\"), Format([F3], \"#\") FROM [Sheet1$]", conn);
                OleDbDataReader reader = cmd.ExecuteReader();
                while (reader.Read())
                {
                    string[] values = new string[3];                        
                    values[0] = reader.GetString(0);
                    values[1] = reader.GetString(1);
                    values[2] = reader.GetString(2);

                    DataRow dr = datatab.NewRow();
                    dr.ItemArray = values;
                    datatab.Rows.InsertAt(dr, i);
                    i++;
                }
            }
        }
    }

方案2

private static DataTable GetInvoiceItems(string filepath)
{
        DataTable dt = new DataTable();
        string excelConString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Excel=8.0;IMEX=1;HDR=NO;TypeGuessRows=1;ImportMixedTypes=Text\\";
        using (OleDbConnection conn = new OleDbConnection(excelConString))
        {
            OleDbDataAdapter ada = new OleDbDataAdapter("SELECT [F1], [F2], [F3], [F4], [F5] FROM [Sheet1$]", conn);
            conn.Open();
            ada.Fill(dt);
        }
        return dt;
}

---

现在奇怪的是，第一个程序在同一台电脑上运行得很好，而第二个程序出现错误，说电脑上没有可安装的ISAM。有什么建议吗？

尽管你断言它们都是一样的，但仔细看，它们不是。看看你的连接字符串

方案1

    public DataTable GetExcelInfo(string filepath)
    {
        DataTable datatab = new DataTable();
        try
        {
            string connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Excel 8.0;IMEX=1;HDR=NO;TypeGuessRows=1;ImportMixedTypes=Text\\";
            using (OleDbConnection conn = new OleDbConnection(connectionString))
            {
                conn.Open();
                OleDbCommand cmd = new OleDbCommand("SELECT Format([F1], \"#\"), Format([F2], \"#\"), Format([F3], \"#\") FROM [Sheet1$]", conn);
                OleDbDataReader reader = cmd.ExecuteReader();
                while (reader.Read())
                {
                    string[] values = new string[3];                        
                    values[0] = reader.GetString(0);
                    values[1] = reader.GetString(1);
                    values[2] = reader.GetString(2);

                    DataRow dr = datatab.NewRow();
                    dr.ItemArray = values;
                    datatab.Rows.InsertAt(dr, i);
                    i++;
                }
            }
        }
    }

方案2

private static DataTable GetInvoiceItems(string filepath)
{
        DataTable dt = new DataTable();
        string excelConString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Excel=8.0;IMEX=1;HDR=NO;TypeGuessRows=1;ImportMixedTypes=Text\\";
        using (OleDbConnection conn = new OleDbConnection(excelConString))
        {
            OleDbDataAdapter ada = new OleDbDataAdapter("SELECT [F1], [F2], [F3], [F4], [F5] FROM [Sheet1$]", conn);
            conn.Open();
            ada.Fill(dt);
        }
        return dt;
}

---

程序2中的Excel 8.0中不应该有

=

。

您的bin目录中有DLL吗？可能有一个名字是以Ms开头的，比如Msexcl####.dll，或者Mspdbe###.dll，如果一个有，另一个没有，试着把它复制过来。我现在觉得有点愚蠢。。。。非常感谢你指出我完全错过了。。。