Question

我在C＃上工作。我的输入文件看起来像：

d00 d04 WinMain
d00 d04    lpCmdLine: '/UNREGSERVER'
d00 d04 Run
d00 d04 
           lpCmdLine: '/UNREGSERVER'
d00 d04    nCmdShow: 10
d00 d04 leaving WinMain   

CustomerID  CompanyName ContactName ContactTitle    Address City    Region  PostalCode  Country Phone   Fax
ALFKI   Alfreds Futterkiste Maria Anders    Sales Representative    Obere Str. 57   Berlin  NULL    12209   Germany 030-0074321 030-0076545
ANATR   Ana Trujillo Emparedados y helados  Ana Trujillo    Owner   Avda. de la Constitución 2222   México D.F. NULL    05021   Mexico  (5) 555-4729    (5) 555-3745
ANTON   Antonio Moreno Taquería Antonio Moreno  Owner   Mataderos  2312 México D.F. NULL    05023   Mexico  (5) 555-3932    NULL
AROUT   Around the Horn Thomas Hardy    Sales Representative    120 Hanover Sq. London  NULL    WA1 1DP UK  (171) 555-7788  (171) 555-6750
BERGS   Berglunds snabbköp  Christina Berglund  Order Administrator Berguvsvägen  8 Luleå   NULL    S-958 22    Sweden  0921-12 34 65   0921-12 34 67
BLAUS   Blauer See Delikatessen Hanna Moos  Sales Representative    Forsterstr. 57  Mannheim    NULL    68306   Germany 0621-08460  0621-08924
BLONP   Blondesddsl père et fils    Frédérique Citeaux  Marketing Manager   24, place Kléber    Strasbourg  NULL    67000   France  88.60.15.31 88.60.15.32
BOLID   Bólido Comidas preparadas   Martín Sommer   Owner   C/ Araquil, 67  Madrid  NULL    28023   Spain   (91) 555 22 82  (91) 555 91 99
BONAP   Bon app'    Laurence Lebihan    Owner   12, rue des Bouche

d00 d04 WinMain
d00 d04    lpCmdLine: '/UNREGSERVER'
d00 d04 Run
d00 d04 
           lpCmdLine: '/UNREGSERVER'
d00 d04    nCmdShow: 10
d00 d04 leaving WinMain  

CustomerID  CompanyName ContactName ContactTitle    Address City    Region  PostalCode  Country Phone   Fax
ALFKI   Alfreds Futterkiste Maria Anders    Sales Representative    Obere Str. 57   Berlin  NULL    12209   Germany 030-0074321 030-0076545
ANATR   Ana Trujillo Emparedados y helados  Ana Trujillo    Owner   Avda. de la Constitución 2222   México D.F. NULL    05021   Mexico  (5) 555-4729    (5) 555-3745
ANTON   Antonio Moreno Taquería Antonio Moreno  Owner   Mataderos  2312 México D.F. NULL    05023   Mexico  (5) 555-3932    NULL
AROUT   Around the Horn Thomas Hardy    Sales Representative    120 Hanover Sq. London  NULL    WA1 1DP UK  (171) 555-7788  (171) 555-6750
BERGS   Berglunds snabbköp  Christina Berglund  Order Administrator Berguvsvägen  8 Luleå   NULL    S-958 22    Sweden  0921-12 34 65   0921-12 34 67
BLAUS   Blauer See Delikatessen Hanna Moos  Sales Representative    Forsterstr. 57  Mannheim    NULL    68306   Germany 0621-08460  0621-08924
BLONP   Blondesddsl père et fils    Frédérique Citeaux  Marketing Manager   24, place Kléber    Strasbourg  NULL    67000   France  88.60.15.31 88.60.15.32
BOLID   Bólido Comidas preparadas   Martín Sommer   Owner   C/ Araquil, 67  Madrid  NULL    28023   Spain   (91) 555 22 82  (91) 555 91 99
BONAP   Bon app'    Laurence Lebihan    Owner   12, rue des Bouche

我想将此文本文件保存到* 数据集。 *如何执行此操作。我会编写以下代码来执行此操作。

DataSet ds = TextToDataSet.Convert(@"C:\readme.txt", "MyNewTable", "\t");


public static DataSet Convert(string File,
 string TableName, string delimiter)
{
    //The DataSet to Return

    DataSet result = new DataSet();

    //Open the file in a stream reader.

    StreamReader s = new StreamReader(File);

    //Split the first line into the columns       

    string[] columns = s.ReadLine().Split(delimiter.ToCharArray());

    //Add the new DataTable to the RecordSet

    result.Tables.Add(TableName);

    //Cycle the colums, adding those that don't exist yet 

    //and sequencing the one that do.

    foreach (string col in columns)
    {
        bool added = false;
        string next = "";
        int i = 0;
        while (!added)
        {
            //Build the column name and remove any unwanted characters.

            string columnname = col + next;
            columnname = columnname.Replace("#", "");
            columnname = columnname.Replace("'", "");
            columnname = columnname.Replace("&", "");

            //See if the column already exists

            if (!result.Tables[TableName].Columns.Contains(columnname))
            {
                //if it doesn't then we add it here and mark it as added

                result.Tables[TableName].Columns.Add(columnname);
                added = true;
            }
            else
            {
                //if it did exist then we increment the sequencer and try again.

                i++;
                next = "_" + i.ToString();
            }
        }
    }

    //Read the rest of the data in the file.        

    string AllData = s.ReadToEnd();

    //Split off each row at the Carriage Return/Line Feed

    //Default line ending in most windows exports.  

    //You may have to edit this to match your particular file.

    //This will work for Excel, Access, etc. default exports.

    string[] rows = AllData.Split("\r\n".ToCharArray());

    //Now add each row to the DataSet        

    foreach (string r in rows)
    {
        //Split the row at the delimiter.

        string[] items = r.Split(delimiter.ToCharArray());

        //Add the item

        result.Tables[TableName].Rows.Add(items);
    }

    //Return the imported data.        

    return result;
}

如果我使用多分隔而不是错误显示。如何使用多分界。如果我运行代码来加载上面给出的文本文件显示波纹管错误

输入数组比此表中的列数长。

Answer 1

您的问题是您的分隔符包含在您要分隔的字段中....

换句话说，如果代替空格，客户名称等而不是空格，那么你的代码会很好，这样分割函数只会返回列数据。例如：

ALFKI   Alfreds Futterkiste Maria Anders    Sales Representative    Obere Str. 57   Berlin  NULL    12209   Germany 030-0074321 030-0076545

将拆分为：

ALKFI, Alfreds, Futterkiste, Maria, Anders, Sales, Representative.....

当您使用空格来分隔字段时。

希望能回答你的问题：）

编辑：如下面的评论中所述，我提出了使用RegEx的想法，所以这里是：

这将为您提供每行的数据：

Match Telephone = Regex.Match(Target, @"\d*-\d*");
Match Fax = Telephone.NextMatch();
Match Country = Regex.Match(Target, @"\w*(?=\s\d{0,3}-)");
Match PCode = Regex.Match(target, @"(?=\s*)\d*(?=\s*" + Country.Value + ")");

目标是您从文件中读取的行

我现在正在学习RegEx，所以给我一些时间来获得更多的RegEx表达式......

如何使用多个分隔的文本文件填充DataSet

1 个答案: