C# -Code zum Importieren von Daten aus flachen Dateien

Question

ssdt für SQL Server 2014 beim Importieren von flachen Dateien aus einer Anwendung von Drittanbietern gibt "Spalte Delimiter nicht gefunden Fehler".

C# -Code:

string[] source = Directory.GetFiles(@"\\share\data\", "*.txt"); 


using(SqlConnection conn = new SqlConnection("Data Source=sql_server;Initial Catalog=test;Integrated Security=SSPI")) 
{ 
    string query = 
     "INSERT INTO dbo.srcText(uid, code, description) VALUES(@uid, @code, @description)"; 

    using(SqlCommand cmd = new SqlCommand(query, conn)) 
    {  
     cmd.Parameters.Add("@uid", SqlDbType.Int); 
     cmd.Parameters.Add("@code", SqlDbType.VarChar, 10); 
     cmd.Parameters.Add("@description", SqlDbType.VarChar, 500); 


     foreach (string loadData in source) 
     { 

     string[] allrecords = File.ReadAllLines(loadData); 

     conn.Open(); 


     for (int index = 1; index < allrecords.Length; index++) 
     { 
      // how would I include multiple text qualifiers 
      string[] items = allrecords[index].Split(new char[] { '|' }); 

      cmd.Parameters["@uid"].Value = items[0]; 
      cmd.Parameters["@code"].Value = items[1]; 
      cmd.Parameters["@description"].Value = items[2]; 

      cmd.ExecuteNonQuery(); 
     } 

     conn.Close(); 
     } 
    } 
} 

Wie durch den Umgang mit mehreren Texterkennungszeichen dieses robuster machen?

Answer 1

Sie könnten eine Reihe von Splits erstellen:

  char[] splits = new char[] { ',', '|', ';' };//add whatever delimiters you want here, surrounded by single quotes and separated by commas 
     string[] parts; 
     bool splitFound = false;//you could just test for parts==null but I'm adding this anyway. It allows handling a situation where no delimiters are found 
     foreach(char splitter in splits) 
     { 
      parts = allrecords[index].Split(splitter);//this assumes that the text will never have any of the delimeters in it unless they are delimiting. If so, you need to handle first 
      if (parts.Length > 0) 
      { 
       splitFound=true; 
       break; 
      } 
     } 
     if(splitFound){ 
     //process parts 
      cmd.Parameters["@uid"].Value = parts[0]; 
      cmd.Parameters["@code"].Value = parts[1]; 
      cmd.Parameters["@description"].Value = parts[2]; 

      cmd.ExecuteNonQuery(); 

     }else{ 
      //handle no splits found 
     }