c# - 删除导出到文本文件的列之间的空格

Question

我正在使用 c# windows 应用程序从数据库中获取数据并显示在 datagridview 上并导出到文本文件我想删除以下 4 列之间的空格。

2  
vehicle control services ltd 
Brom
Malkit

我得到 2 vehicle control services ltd brom mal，但我希望它像 2vehicle control services ltdBromMlkit

这是我的代码。

string stringSql = " SELECT distinct  " +
                "'" + comboBox6.Text + "' as RecordType" +
               " , left([Claimant Name] +'                              ',30) " +
                " , left([Claimant Address1] +'                             ',30)  " +
                " , left([Claimant Address2] +'                             ',30) as ClaimantAddress2 " +
                " , left([Claimant Address3] +'                             ',30) as

导出到文本文件代码

 if (obj == null || obj == Convert.DBNull)
                return "";

            // if string has no ','
            if (obj.ToString().IndexOf(",") == -1)
                return obj.ToString();

            // remove backslahes
            return "\"" + obj.ToString() + "\"";
        }

        private void ExportDatatviewToCsv(string iFilename, DataView dv)
        {
            // Open output stream
            StreamWriter swFile = new StreamWriter(iFilename);


            // Rows of Data
            foreach (DataRowView rowData in dv)
            {
                string[] colData = new string[dv.Table.Columns.Count];
                for (int i = 0; i < dv.Table.Columns.Count; i++)
                {
                    object obj = rowData[i];
                    colData[i] = GetWriteableValueForCsv(obj);
                }

                // Write data in row
                swFile.WriteLine(string.Join(" ", colData));
            }

            // Close output stream
            swFile.Close();
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            if (myDataset == null)
            {
                return;
            }

            if (myDataset.Tables[0].Rows.Count == 0)
            {
                return;
            }
            DataView vwExport = new DataView(myDataset.Tables[0]);
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "TXT file|*.txt";
            sfd.FileName = "ee "  + ".txt";

            if (sfd.ShowDialog() == DialogResult.OK)
            {

                if (sfd.FileName != "")
                {
                    ExportDatatviewToCsv(sfd.FileName, vwExport);
                    MessageBox.Show("File has been saved as: " + Environment.NewLine + sfd.FileName + Environment.NewLine + Environment.NewLine + "NB: This dataset has been ordered by t_reference in ascending order. If being combined with an existing dataset - that dataset will also need to be sorted in this way.", "Operation complete", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }


  }

Answer 1

只是为了弄清楚我认为你在问什么......

你目前为每一行得到这个:

2 vehicle control services ltd brom mal

但是你希望每一行都这样(让我指出这完全没有意义，它看起来不太有用):

2vehicle control services ltdBromMlkit

如果是这种情况，那么在您的代码中只需替换这一行:

swFile.WriteLine(string.Join(" ", colData));

用这一行:

swFile.WriteLine(string.Join("", colData));

请注意，它现在将用空字符串连接字符串，而不是连接您不想要的单个空格。