這應該工作:(從http://www.hotblue.com/article0000.aspx?a=0006)
只需用逗號部分替換:
if ((postdata || !quoted) && (c == ',' || c == '\t'))
以使其製表符分隔。
using System.Data;
using System.IO;
using System.Text.RegularExpressions;
public DataTable ParseCSV(string inputString) {
DataTable dt=new DataTable();
// declare the Regular Expression that will match versus the input string
Regex re=new Regex("((?<field>[^\",\\r\\n]+)|\"(?<field>([^\"]|\"\")+)\")(,|(?<rowbreak>\\r\\n|\\n|$))");
ArrayList colArray=new ArrayList();
ArrayList rowArray=new ArrayList();
int colCount=0;
int maxColCount=0;
string rowbreak="";
string field="";
MatchCollection mc=re.Matches(inputString);
foreach(Match m in mc) {
// retrieve the field and replace two double-quotes with a single double-quote
field=m.Result("${field}").Replace("\"\"","\"");
rowbreak=m.Result("${rowbreak}");
if (field.Length > 0) {
colArray.Add(field);
colCount++;
}
if (rowbreak.Length > 0) {
// add the column array to the row Array List
rowArray.Add(colArray.ToArray());
// create a new Array List to hold the field values
colArray=new ArrayList();
if (colCount > maxColCount)
maxColCount=colCount;
colCount=0;
}
}
if (rowbreak.Length == 0) {
// this is executed when the last line doesn't
// end with a line break
rowArray.Add(colArray.ToArray());
if (colCount > maxColCount)
maxColCount=colCount;
}
// create the columns for the table
for(int i=0; i < maxColCount; i++)
dt.Columns.Add(String.Format("col{0:000}",i));
// convert the row Array List into an Array object for easier access
Array ra=rowArray.ToArray();
for(int i=0; i < ra.Length; i++) {
// create a new DataRow
DataRow dr=dt.NewRow();
// convert the column Array List into an Array object for easier access
Array ca=(Array)(ra.GetValue(i));
// add each field into the new DataRow
for(int j=0; j < ca.Length; j++)
dr[j]=ca.GetValue(j);
// add the new DataRow to the DataTable
dt.Rows.Add(dr);
}
// in case no data was parsed, create a single column
if (dt.Columns.Count == 0)
dt.Columns.Add("NoData");
return dt;
}
現在,我們有一個字符串轉換成一個DataTable解析器,現在我們需要的是將讀取一個CSV文件中的內容並把它傳遞給我們的ParseCSV功能的函數:
public DataTable ParseCSVFile(string path) {
string inputString="";
// check that the file exists before opening it
if (File.Exists(path)) {
StreamReader sr = new StreamReader(path);
inputString = sr.ReadToEnd();
sr.Close();
}
return ParseCSV(inputString);
}
現在你可以很容易地用數據填充脫落的CSV文件的數據網格:
protected System.Web.UI.WebControls.DataGrid DataGrid1;
private void Page_Load(object sender, System.EventArgs e) {
// call the parser
DataTable dt=ParseCSVFile(Server.MapPath("./demo.csv"));
// bind the resulting DataTable to a DataGrid Web Control
DataGrid1.DataSource=dt;
DataGrid1.DataBind();
}
您是否嘗試過使用以下部分在同一目錄中創建schema.ini? [MyFilename.txt] Format = TabDelimited – 2010-02-24 20:05:06