C＃從數據表插入數據到SQL Server數據庫

Question

我已經嘗試過幾乎所有的解決方案，但我無法解決這個問題。我有通過ODBC連接從數據庫中檢索的數據。數據在那裏。它將進入數據網格視圖，但我無法獲取這些數據進入我的本地SQL數據庫。請告訴我我做錯了什麼。

public partial class frmNorth : Form 
{ 
     // variables for the connections 
     private OdbcConnection epnConnection = new OdbcConnection(); 
     private SqlConnection tempDbConnection = new SqlConnection(); 
public frmNorth() 
{ 
    InitializeComponent(); 
    // This is for the ePN DB 
    epnConnection.ConnectionString = @"Dsn=ePN; uid=username; pwd=myPa$$Word"; 
    // This is for the local DB 
    tempDbConnection.ConnectionString = @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\TempDB.mdf;Integrated Security=True"; 
} 
private void btnLoadData_Click(object sender, EventArgs e) 
{ 
    try 
     { 
      //===This part works just fine=============================================================== 
      epnConnection.Open(); 
      string epnQuery = "SELECT FNCL_SPLIT_REC_ID, PROJ_ID, SALES_SRC_PRC " + 
           "FROM PROJ_FNCL_SPLIT " + 
           "WHERE PROJ_ID=" + textBox1.Text + ""; 
      OdbcCommand epnCommand = new OdbcCommand(epnQuery, epnConnection); 
      epnCommand.CommandTimeout = 0; 

      //This connects the data to the data table 
      OdbcDataAdapter da = new OdbcDataAdapter(epnCommand); 
      DataTable dt = new DataTable(); 
      da.Fill(dt); 
      dataGridView1.DataSource = dt; 
      //=========================================================================================== 


      //======The part below is the part that wont work. The data wont go into the SQL database==== 
      tempDbConnection.Open(); 
      string tempSql = ""; 
      for (int i = 0; i < dt.Rows.Count; i++) 
      { 
       tempSql = "INSERT INTO tblTemp (FNCL_SPLIT_REC_ID, PROJ_ID, SALES_SRC_PRC) VALUES ('" 
          + dt.Rows[i]["FNCL_SPLIT_REC_ID"].ToString().Trim() + "','" 
          + dt.Rows[i]["PROJ_ID"].ToString().Trim() + "','" 
          + dt.Rows[i]["SALES_SRC_PRC"].ToString().Trim() + "');"; 
       SqlCommand tempCommand = new SqlCommand(tempSql, tempDbConnection); 
       tempCommand.ExecuteNonQuery(); 
      } 
       // There are no errors. The data just doesn't save to the database. 
      //=========================================================================================== 

      epnConnection.Close(); 
      tempDbConnection.Close(); 

     } 
     catch (Exception ex) 
     { 
      epnConnection.Close(); 
      tempDbConnection.Close(); 
      MessageBox.Show("Error " + ex); 
     } 
    } 
} 
} 

    //+++++++++++++++++++This is what the table looks like+++++++++++++++++++++++++++++++++++++++++++++++ 
    CREATE TABLE [dbo].[tblTemp] (
[FNCL_SPLIT_REC_ID] INT  NOT NULL, 
[PROJ_ID]   NCHAR (10) NULL, 
[SALES_SRC_PRC]  MONEY  NULL, 
PRIMARY KEY CLUSTERED ([FNCL_SPLIT_REC_ID] ASC) 

就像我說的沒有錯誤出現。數據只是不保存到數據庫。

Answer 1

"INSERT INTO tblTemp (FNCL_SPLIT_REC_ID, PROJ_ID, SALES_SRC_PRC) VALUES (" 
        + dt.Rows[i]["FNCL_SPLIT_REC_ID"].ToString().Trim() + ",'" 
        + dt.Rows[i]["PROJ_ID"].ToString().Trim() + "'," 
        + dt.Rows[i]["SALES_SRC_PRC"].ToString().Trim() + ");"; 

刪除了「」 FNCL_SPLIT_REC_ID之間，因爲它是int和SALES_SRC_PRC，因爲它是錢。

Answer 2

我發現您的代碼沒有錯誤。我發現mdf文件的連接定義是錯誤的。

|DataDirectory|設置路徑到應用程序運行的文件夾。在這種情況下，如果我們以調試模式運行，它將在Debug \ bin文件夾中創建單獨的應用程序exe，其中包含應用程序資源，如.mdf文件。或在發佈模式下，它將在發佈文件夾內創建特定的文件夾。因此，您需要更改數據庫連接字符串的數據庫文件名，或者需要爲連接字符串提供完整的目錄路徑。例如

tempDbConnection.ConnectionString = @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\TempDB.mdf;Integrated Security=True"; 
} 

更換

tempDbConnection.ConnectionString = @"Data Source=(LocalDB)\v11.0;AttachDbFilename=C:\Users\Promod\Documents\Visual Studio 2012\Projects\Contribution1\Contribution1\bin\Debug\TempDB.mdf;Integrated Security=True";