Question

我遇到以下代码问题： -

 private void btnUpload_Click(object sender, EventArgs e)
    {

        string nm = txtFilename.Text;
        string qry = "LOAD DATA INFILE 'D:\\HHTFiles\\" + nm + "' INTO TABLE `table1`.`location`FIELDS TERMINATED BY '-->'LINES TERMINATED BY '\r\n'(Barcode,BinLoc);";
        cmd = new OdbcCommand(qry, con);
        int i = cmd.ExecuteNonQuery();
        if (i > 0)
        {
            MessageBox.Show(" File loaded successfully...");
        }


    }

private void btnBrowse_Click(object sender, EventArgs e)
    {
        OpenFileDialog openfiledailog1 = new OpenFileDialog();
        openfiledailog1.InitialDirectory = "D:\\HHTFiles\\";
        openfiledailog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
        openfiledailog1.FilterIndex = 2;
        openfiledailog1.RestoreDirectory = true;

        if (openfiledailog1.ShowDialog() == DialogResult.OK)
        {
            try
            {
                if ((openfiledailog1.OpenFile()) != null)
                {

                     txtFilename.Text = openfiledailog1.SafeFileName.ToString();

                }
            }
            catch (Exception ex)
            {
              MessageBox.Show("Error: Could not read file from disk. Original error: "      + ex.Message);
            }
        }
    }

如果我在查询中提供完整的文件路径，它运行正常，如： - string qry =“LOAD DATA INFILE'D：\ HHTFiles \ ABC.txt'INTO TABLE table1。location FIELDS TERMINATED BY' - ＆gt;'LINESATED by'\ r \ n'（条码，BinLoc）;“; 但是，当在String变量中传递文件路径时，它会抛出错误。

错误： - 错误[HY000] [MySQL] [ODBC 5.1驱动程序] [mysqld-5.1.48-community]找不到文件'D：HHTFilesABC.txt'（错误代码：2）

Answer 1

@Aghilas它解决了:)虽然我不知道为什么我在第一时间出错。不管怎样，我只是用'/'替换'\\'，它运行正常。

        string nm = txtFilename.Text;
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.Append("LOAD DATA INFILE ");
        stringBuilder.Append(Path.Combine("'D:/HHTFiles/", nm));
        stringBuilder.Append("' INTO TABLE `table1`.`location`FIELDS TERMINATED BY '-->'LINES TERMINATED BY '\r\n'(Barcode,BinLoc);");

Answer 2

尝试使用Path.Combine

Path.Combine("D:\\HHTFiles\\", nm);

使用StringBuilder构建查询

 StringBuilder stringBuilder = new StringBuilder();
 stringBuilder.Append("LOAD DATA INFILE ");
 stringBuilder.Append(Path.Combine("D:\\HHTFiles\\", nm));
 stringBuilder.Append(" INTO TABLE table1.location");
 stringBuilder.Append(" FIELDS TERMINATED BY '-->'"); 
 stringBuilder.Append(" LINES TERMINATED BY (");              
 stringBuilder.Append(Barcode.BinLoc);
 stringBuilder.Append(")");

 string qry = stringBuilder.ToString();

C＃中加载数据infile查询出错

2 个答案: