我在上傳excel db文件到winforms C＃中的sql server時出現錯誤＃

Question

我正嘗試創建一個Excel數據上傳器，以便將Excel文件上傳到使用Winforms在C＃中的SQL Server。

bulkcopy.WriteToServer(dr);後，我得到這個錯誤：

Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.
The Connection for viewing your linked Microsoft Excel worksheet was lost.

我得到了有關注冊表編輯器here並試圖跟隨，但還是同樣的錯誤：

class Pass 
{ 
    static string _excelfilepath; 

    public static string excelfilepath { get { return _excelfilepath; } set { _excelfilepath = value; } } 

    public void importdatafromexcel() 
    { 
     //declare variables - edit these based on your particular situation 
     string ssqltable = "tStudent"; 
     // make sure your sheet name is correct, here sheet name is sheet1, so you can change your sheet name if have different 
     string myexceldataquery = "select idnum,fname,gname,mname,coacro,year,yrstat,sex,stat,telno,addr1,addr2,addr3,dbirth,mothname,fathname,civstat,religion,hssch from [masterlist$]"; 
     try 
     { 
      //create our connection strings 
      string sexcelconnectionstring = @"provider=microsoft.jet.oledb.4.0;data source=" + _excelfilepath + 
      ";extended properties=" + "\"excel 8.0;hdr=yes;\""; 
      string ssqlconnectionstring = @"Data Source=LYNDON-PC\LYNDON;Initial Catalog=trial;Persist Security Info=True;User ID=sa;Password=14323531"; 
      //execute a query to erase any previous data from our destination table 
      string sclearsql = "delete from " + ssqltable; 
      SqlConnection sqlconn = new SqlConnection(ssqlconnectionstring); 
      SqlCommand sqlcmd = new SqlCommand(sclearsql, sqlconn); 
      sqlconn.Open(); 
      sqlcmd.ExecuteNonQuery(); 
      sqlconn.Close(); 
      //series of commands to bulk copy data from the excel file into our sql table 
      OleDbConnection oledbconn = new OleDbConnection(sexcelconnectionstring); 
      OleDbCommand oledbcmd = new OleDbCommand(myexceldataquery, oledbconn); 
      oledbconn.Open(); 
      OleDbDataReader dr = oledbcmd.ExecuteReader(); 
      SqlBulkCopy bulkcopy = new SqlBulkCopy(ssqlconnectionstring); 
      bulkcopy.DestinationTableName = ssqltable; 
      while (dr.Read()) 
      { 
       bulkcopy.WriteToServer(dr); 
      } 

      oledbconn.Close(); 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.Message); 
     } 
    } 
} 

什麼是錯誤的意思，並獲得代碼上傳我的Excel文件到我的數據庫在我的表中的SQL Server ...

Answer 1

我認爲你應該使用

bulkcopy.WriteToServer(dr); 

而是採用

while (dr.Read()) 
{ 
    bulkcopy.WriteToServer(dr); 
}