winform CSV文件入库数据缺失

public string TransferCSVData(string csvFile, string tablename, string connectionString){try{DataTable dataTable = new DataTable();string[] columnNames = File.ReadLines(csvFile, Encoding.GetEncoding("GBK")).First().Split(',');//设置了编码格式为GBKforeach (string columnName in columnNames){dataTable.Columns.Add(columnName, typeof(string));}foreach (string line in File.ReadLines(csvFile, Encoding.GetEncoding("GBK")).Skip(1))//设置了编码格式为GBK{string[] values = line.Split(',');DataRow dataRow = dataTable.NewRow();for (int i = 0; i < values.Length; i++){dataRow[i] = values[i];}dataTable.Rows.Add(dataRow);}// 下面是您给出的部分代码int rowsnum = dataTable.Rows.Count;progressBar1.Maximum = rowsnum;using (SqlConnection connection = new SqlConnection(connectionString)){connection.Open();using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connection)){bulkCopy.BulkCopyTimeout = 666666666;bulkCopy.SqlRowsCopied += new System.Data.SqlClient.SqlRowsCopiedEventHandler(bcp_SqlRowsCopied);bulkCopy.BatchSize = 100; //每次传输的行数bulkCopy.NotifyAfter = 100; //进度提示的行数bulkCopy.DestinationTableName = tablename; //目标表bulkCopy.WriteToServer(dataTable);bulkCopy.Close(); //关闭对象richTextBox1.SelectionColor = Color.Blue;richTextBox1.AppendText(System.IO.Path.GetFileName(csvFile) + "导入完成!!!!\n");return "TAG";}}}catch (Exception ex){// 异常处理部分System.Windows.Forms.MessageBox.Show(ex.Message);richTextBox1.SelectionColor = Color.Red;richTextBox1.AppendText(System.IO.Path.GetFileName(csvFile) + "导入失败!!!!" + "\n");richTextBox2.SelectionColor = Color.Red;richTextBox2.AppendText(DateTime.Now.ToString("HH:mm:ss  ") + "导入异常" + "\n");if (ex.Message == "与源或目标中的任意列均不匹配。"){richTextBox1.AppendText("详细失败原因如下：导入的EXCEL的单元格列数比设定的列数多，请检查EXCEL的数据是否异常\n");}else richTextBox1.AppendText("详细失败原因如下：" + ex.Message + "\n");Application.DoEvents();return "";}}public string TransferCSVData0(string csvFile, string tablename, string connectionString){try{DataTable dataTable = new DataTable();string[] columnNames = File.ReadLines(csvFile).First().Split(',');foreach (string columnName in columnNames){dataTable.Columns.Add(columnName, typeof(string));}foreach (string line in File.ReadLines(csvFile).Skip(1)){string[] values = line.Split(',');DataRow dataRow = dataTable.NewRow();for (int i = 0; i < values.Length; i++){dataRow[i] = values[i];}dataTable.Rows.Add(dataRow);}int rowsnum = dataTable.Rows.Count;progressBar1.Maximum = rowsnum;using (SqlConnection connection = new SqlConnection(connectionString)){connection.Open();using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connection)){bulkCopy.BulkCopyTimeout = 666666666;bulkCopy.SqlRowsCopied += new System.Data.SqlClient.SqlRowsCopiedEventHandler(bcp_SqlRowsCopied);bulkCopy.BatchSize = 100; //每次传输的行数bulkCopy.NotifyAfter = 100; //进度提示的行数bulkCopy.DestinationTableName = tablename; //目标表bulkCopy.WriteToServer(dataTable);bulkCopy.Close(); //关闭对象richTextBox1.SelectionColor = Color.Blue;richTextBox1.AppendText(System.IO.Path.GetFileName(csvFile) + "导入完成!!!!\n");return "TAG";}}}catch (Exception ex){System.Windows.Forms.MessageBox.Show(ex.Message);richTextBox1.SelectionColor = Color.Red;richTextBox1.AppendText(System.IO.Path.GetFileName(csvFile) + "导入失败!!!!" + "\n");richTextBox2.SelectionColor = Color.Red;richTextBox2.AppendText(DateTime.Now.ToString("HH:mm:ss  ") + "导入异常" + "\n");if (ex.Message == "与源或目标中的任意列均不匹配。"){richTextBox1.AppendText("详细失败原因如下：导入的EXCEL的单元格列数比设定的列数多，请检查EXCEL的数据是否异常\n");}else richTextBox1.AppendText("详细失败原因如下：" + ex.Message + "\n");Application.DoEvents();return "";}}