Question

我已经将csv加载到数据表中，但是当它们不是空白时，其中一些列被读取为空白。我最初提出这个问题只是标题有问题，但我现在也在我的数据行中看到这个问题，所以我需要重新...我的数据集有什么问题，为什么有些列被读作一个空白？

目前，此设置将读取第1-7列的数据（我不需要8-10）。除了第4列之外，正确填充了所有列的数据。奇怪的是，我有两个我测试过的文件，它们的结构相似，但其中一个在第4列中有值而另一个没有。设置完整代码以循环遍历许多文件，检查数据的开始和结束，然后加载到sql server。

示例CSV：

By OrgID/Location

As of:   December 6, 2017 at 10:13 AM 

Date Range: summaryYM           2017M08 to 2017M08

"orgid=13778 medType=' '"
"col1","col2","col3","col4","col5","col6","col7","col8","col9","col10"
13778,140242,"2A","2017M08",0,0.058,78,".",".",
13778,140242,"2B","2017M08",0,0.014,19,".",".",
13778,140242,"2C","2017M08",0,0.083,133,".",".",
13778,140242,"2ICU","2017M08",0,0.099,114,".",".",
13778,140242,"3 ICU","2017M08",0,0.076,88,".",".",

码

//open connection to csv
string connStrCsv = string.Format(@"Provider=Microsoft.Jet.OleDb.4.0; Data Source={0};Extended Properties=""Text;HDR=NO;FMT=Delimited"""
      , Path.GetDirectoryName(file));
OleDbConnection connCsv = new OleDbConnection(connStrCsv);
connCsv.Open();

//store csv data in datatable
string readCsv = "select * from [" + Path.GetFileName(file) + "]";
OleDbDataAdapter adapter = new OleDbDataAdapter(readCsv, connCsv);
DataSet ds = new DataSet();
adapter.Fill(ds, "sheet1");
DataTable table = ds.Tables["sheet1"];
connCsv.Close();

//find header to define start of data
int start = 0;
StreamReader headerSearch = null;
int incr = 0;
headerSearch = new StreamReader(file);
while (!headerSearch.EndOfStream)
{
  incr++;
  string line = headerSearch.ReadLine();
  if (line.Contains("\"col1\",\"col2\",\"col3\",\"col4\",\"col5\",\"col6\""))
  {
      start = incr;
  }
}
headerSearch.Close();

//load each row of excel into SQL server until first empty row
string sqlConnStr = "Data Source=mysource;Initial Catalog=mydatabase;Trusted_Connection=Yes;Integrated Security=SSPI;";
SqlConnection connSql = new SqlConnection(sqlConnStr);
connSql.Open();

int end = start;
while (table.Rows[end][0].ToString().Length != 0)
{
  string sql = string.Format
  (@"
  delete from schema.table
  where ss_col1      =  {0}    
      and ss_col2    = '{1}' 
      and ss_col3    = '{2}' 
      and ss_col4    = '{3}';

  insert into schema.table
  values ({4}        
      ,'{5}'         
      ,'{6}'         
      ,'{7}'         
      , {8}          
      ,'{9}'         
      ,'{10}'        
      ,getdate()
      ,user_name()
      ,getdate()
      ,user_name());"
      //delete statement variables
      , table.Rows[end][0].ToString()
      , table.Rows[end][2].ToString()
      , table.Rows[end][3].ToString()
      , infTypes[i]
      //insert statement variables
      , table.Rows[end][0].ToString()
      , table.Rows[end][2].ToString()
      , table.Rows[end][3].ToString()
      , infTypes[i]
      , table.Rows[end][4]
      , table.Rows[end][5].ToString()
      , table.Rows[end][6]
  );

  SqlCommand execSql = new SqlCommand(sql, connSql);
  execSql.ExecuteNonQuery();

  end++;
}
connSql.Close();

Answer 1

您是否必须将其加载到数据表中？如果“header1”，“header2”，“header3”，“header4”，“header5”，“header6”都是唯一的，那么在你找到csv文件之前读取它们并不容易吗？

示例......

$( id + ' .attachedImage').load( $( id + ' .threadLink').attr('href') ...

C＃csv加载到数据表缺失列

1 个答案: