C# 导出到csv以忽略注释中的逗号和换行符
我有下面导出到csv的代码,但我刚刚意识到它不处理“comments”字段文本框中的逗号或换行符。有没有办法忽略某个字段或所有字段中的逗号和换行符C# 导出到csv以忽略注释中的逗号和换行符,c#,csv,C#,Csv,我有下面导出到csv的代码,但我刚刚意识到它不处理“comments”字段文本框中的逗号或换行符。有没有办法忽略某个字段或所有字段中的逗号和换行符 private void saveFileDialogTrack_FileOk(object sender, CancelEventArgs e) { StringBuilder str = new StringBuilder(); foreach (DataRow dr in this.trackDataSe
private void saveFileDialogTrack_FileOk(object sender, CancelEventArgs e)
{
StringBuilder str = new StringBuilder();
foreach (DataRow dr in this.trackDataSet.Track)
{
foreach (object field in dr.ItemArray)
{
str.Append(field.ToString() + ",");
}
str.Replace(",", Environment.NewLine, str.Length - 1, 1);
}
string name = saveFileDialogTrack.FileName;
try
{
System.IO.File.WriteAllText(name, str.ToString());
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
str = null;
}
样本csv前几个字段Barbagallo,31,39,51.01
private void openFileDialogTrack_FileOk(object sender, CancelEventArgs e)
{
try
{
using (StreamReader SR = new StreamReader(openFileDialogTrack.FileName))
{
while (!SR.EndOfStream)
{
var CSValues = SR.ReadLine().Split(',');
SqlCeConnection myConnection = new SqlCeConnection("Data Source = Track.sdf");
myConnection.Open();
String str = (@"INSERT INTO Track (Track, StartFinishLineNSDegrees, StartFinishLineNSMinutes,
VALUES (@track, @SFNSD, @SFNSM,
SqlCeCommand cmd = new SqlCeCommand(str, myConnection);
cmd.Parameters.AddWithValue("@track", CSValues[0] == string.Empty ? (object)DBNull.Value : CSValues[0]);
cmd.Parameters.AddWithValue("@SFNSD", CSValues[1] == string.Empty ? (object)DBNull.Value : CSValues[1]);
cmd.Parameters.AddWithValue("@SFNSM", CSValues[2] == string.Empty ? (object)DBNull.Value : CSValues[2]);
VALUES (@track, @SFNSD, @SFNSM,
SqlCeCommand cmd = new SqlCeCommand(str, myConnection);
cmd.Parameters.AddWithValue("@track", CSValues[0] == string.Empty ? (object)DBNull.Value : CSValues[0]);
cmd.Parameters.AddWithValue("@SFNSD", CSValues[1] == string.Empty ? (object)DBNull.Value : CSValues[1]);
cmd.Parameters.AddWithValue("@SFNSM", CSValues[2] == string.Empty ? (object)DBNull.Value : CSValues[2]);
根据:
包含换行符、双引号和逗号的字段应包含在双引号中
为了安全起见,为了简化编码,您可以将所有字段用引号括起来
替换此项:
str.Append(field.ToString() + ",");
为此:
str.Append(string.Format("\"{0}\",", field));
在将字符串添加到stringbuilder之前,我创建了一个方法来添加引号中的文本(如果需要)
private string HandelQuote(string text)
{
if (string.IsNullOrEmpty(text)) return string.Empty;
var containsQuote = text.Contains('"');
var containsComma = text.Contains(',');
var addQuote = containsComma || containsQuote;
if (addQuote)
{
text = text.Replace("\"", "\"\"");
}
return addQuote ? "\"" + text + "\"" : text;
}
那么进口产品会是什么样子呢?这就是我过去拥有的。。。var CSValues=SR.ReadLine.Split',';这两种情况下,第一个代码都会导出到csv,但仅以逗号分隔,不带双引号。第二个代码是导入函数,但它只处理逗号,不处理双引号。是的,这是正确的,它只是用户共享数据和备份数据的一种方式;如果文本被双引号括起来,streamreader是否关心文本是否打断到新行上?