程序方面：
1.Windows 中的换行符"\r\n"
2.Unix/Linux 平台换行符是 "\n"。
3.MessageBox.Show() 的换行符为 "\n"
4.Console 的换行符为 "\n"
为保持平台的通用性，可以用系统默认换行符 System.Environment.NewLine。
sql server：换行
select subscriber_id,subscriber_email,company_name from [dbo].[NewsLetterSystem_Subscriber]
where subscriber_id=6967035 update [NewsLetterSystem_Subscriber]
set company_name=N'ALLY CATERING SOLUTION LIMITED'+CHAR(13)+CHAR(10) +N'安聯餐飲設備有限公司'
where subscriber_id=6967035 update [NewsLetterSystem_Subscriber]
set company_name=N'ALLY CATERING SOLUTION LIMITED'+CHAR(10) +N'安聯餐飲設備有限公司'
where subscriber_id=6967035 update [NewsLetterSystem_Subscriber]
set company_name=N'ALLY CATERING SOLUTION LIMITED'+CHAR(13) +N'安聯餐飲設備有限公司'
where subscriber_id=6967035
C# 程序：
public static string ExportReportInCsv(DataTable dt, string filename, string tmpDir)
{
string tmpFilename = DateTime.Now.Ticks + "_" + filename;
string tmpFilenameWithPath = tmpDir + tmpFilename;
FileStream fs = new FileStream(tmpFilenameWithPath, System.IO.FileMode.Create, System.IO.FileAccess.Write);
//var encoding = GetFileEncodeType(fs);
StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8);
StringBuilder sb = new StringBuilder();
//写出列名称
for (int i = ; i < dt.Columns.Count; i++)
{
sb.Append(dt.Columns[i].ColumnName.ToString());
if (i < dt.Columns.Count - )
{
sb.Append(",");
}
}
sw.WriteLine(sb.ToString()); for (int i = ; i < dt.Rows.Count; i++)
{
sb.Clear();
for (int j = ; j < dt.Columns.Count; j++)
{
string rowsText = dt.Rows[i][j].ToString();
rowsText = HandleWrap(rowsText);
sb.Append(rowsText);
if (j < dt.Columns.Count - )
{
sb.Append(",");
}
}
sw.WriteLine(sb.ToString());
}
sw.Close();
fs.Close();
return tmpFilenameWithPath;
} public static string HandleWrap(string content)
{
if (content.Contains(Environment.NewLine))
{
var list = content.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
content = string.Join(" ",list);
} content = content.Replace(@"\n", " ").Replace(@"\r\n", " ").Replace((char),' ').Replace((char), ' ');
return content;
}