Отправка данных в базу данных acess

Я пытаюсь отправить данные в базу данных доступа, но она продолжает давать ту же ошибку (ExecuteNonQuery: свойство Connection не было инициализировано), я пытаюсь найти ответы на связанные темы, но я, кажется, не посмотрите, где проблема, пожалуйста, спасибо, спасибо. Код ниже:Отправка данных в базу данных acess

public static string[] questions = new string[7]; 

    private void SaveData_Load(object sender, EventArgs e) 
    { 
     //Selecting data from login 
     string fileName = @"U:\Projects\Visual Studio\Extras resources\login.xlsx"; 
     string connectionString = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName); 

     using (OleDbConnection cn = new OleDbConnection(connectionString)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1cl1 = Convert.ToString(dr[1]); 
         dateTime_bx.Text = row1Col0; 
         auditor_bx.Text = row1cl1; 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from datawindow 
     string fileName2 = @"U:\Projects\Visual Studio\Extras resources\dataWindow.xlsx"; 
     string connectionString2 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName2); 

     using (OleDbConnection cn = new OleDbConnection(connectionString2)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         string row1Col2 = Convert.ToString(dr[2]); 
         string row1Col3 = Convert.ToString(dr[3]); 
         opId_bx.Text = row1Col0; 
         shopOrder_bx.Text = row1Col1; 
         partNumber_bx.Text = row1Col2; 
         opNumber_bx.Text = row1Col3; 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from documentation 
     string fileName3 = @"U:\Projects\Visual Studio\Extras resources\documentation.xlsx"; 
     string connectionString3 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName3); 

     using (OleDbConnection cn = new OleDbConnection(connectionString3)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         q1_bx.Text = row1Col0; 

         //boolean to check if string is empty 
         Documentation doc = new Documentation(); 
         if (a == 2) 
         { 
          questions[0] = " Q1- " + row1Col1; 

         } 
         else 
         { 
         } 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from materials 
     string fileName4 = @"U:\Projects\Visual Studio\Extras resources\materials.xlsx"; 
     string connectionString4 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName4); 

     using (OleDbConnection cn = new OleDbConnection(connectionString4)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         q2_bx.Text = row1Col0; 

         //boolean to check if string is empty 
         if (b == 2) 
         { 
          questions[1] = " Q2- " + row1Col1; 
         } 
         else 
         { 
         } 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from procedure 
     string fileName5 = @"U:\Projects\Visual Studio\Extras resources\comformity.xlsx"; 
     string connectionString5 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName5); 

     using (OleDbConnection cn = new OleDbConnection(connectionString5)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         q3_bx.Text = row1Col0; 

         //boolean to check if string is empty 
         if (c == 2) 
         { 
          questions[2] = " Q3- " + row1Col1; 
         } 
         else 
         { 
         } 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from No_procedure 
     string fileName6 = @"U:\Projects\Visual Studio\Extras resources\proceadure.xlsx"; 
     string connectionString6 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName6); 

     using (OleDbConnection cn = new OleDbConnection(connectionString6)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         q4_bx.Text = row1Col0; 

         //boolean to check if string is empty 
         if (d == 2) 
         { 
          questions[3] = " Q4- " + row1Col1; 
         } 
         else 
         { 
         } 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from calibration 
     string fileName7 = @"U:\Projects\Visual Studio\Extras resources\calibration.xlsx"; 
     string connectionString7 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName7); 

     using (OleDbConnection cn = new OleDbConnection(connectionString5)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         q5_bx.Text = row1Col0; 

         //boolean to check if string is empty 
         if (f == 2) 
         { 
          questions[4] = " Q5- " + row1Col1; 
         } 
         else 
         { 
         } 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from safety 
     string fileName8 = @"U:\Projects\Visual Studio\Extras resources\safety.xlsx"; 
     string connectionString8 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName8); 

     using (OleDbConnection cn = new OleDbConnection(connectionString8)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         q6_bx.Text = row1Col0; 

         //boolean to check if string is empty 
         if (g == 2) 
         { 
          questions[5] = " Q6- " + row1Col1; 
         } 
         else 
         { 
         } 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     //Selecting data from packing 
     string fileName9 = @"U:\Projects\Visual Studio\Extras resources\packing.xlsx"; 
     string connectionString9 = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;" + 
       "Data Source={0};Extended Properties='Excel 12.0;HDR=YES;IMEX=0'", fileName9); 

     using (OleDbConnection cn = new OleDbConnection(connectionString9)) 
     { 
      try 
      { 
       cn.Open(); 
       OleDbCommand command = new OleDbCommand("select * from [lineAudit$]", cn); 
       using (OleDbDataReader dr = command.ExecuteReader()) 
       { 
        while (dr.Read()) 
        { 
         string row1Col0 = Convert.ToString(dr[0]); 
         string row1Col1 = Convert.ToString(dr[1]); 
         q7_bx.Text = row1Col0; 

         //boolean to check if string is empty 
         if (h == 2) 
         { 
          questions[6] = " Q7- " + row1Col1; 

         } 
         else 
         { 
         } 
        } 
       } 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Failed due to" + ex.Message); 
      } 
      cn.Close(); 
     } 

     // Call the methods. 
     string result1 = ConvertStringArrayToString(questions); 
     noteStr_bx.Text = result1; 
    } 

    string ConvertStringArrayToString(string[] questions) 
    { 

     // Concatenate all the elements into a StringBuilder. 
     StringBuilder builder = new StringBuilder(); 
     foreach (string value in questions) 
     { 
      builder.Append(value); 
      builder.Append('.'); 
     } 
     return builder.ToString(); 
    } 
    private void BTNSave_Click(object sender, EventArgs e) 
    { 
     //sending data to database 
     OleDbConnection connect = new OleDbConnection(); 
     connect.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source=U:\Projects\Visual Studio\Extras resources\line_Audits.accdb"; 
     string QueryText = "INSERT INTO lineAudit (dateTime,auditor,operator,partNumber,shopOrder,operationNumber,documentationAndRevision,labeling,conformity,procedure,calibration,safety,packing,Notes) values (@dateTime,@auditor,@operator,@partNumber,@shopOrder,@operationNumber,@documentationAndRevision,@labeling,@conformity,@procedure,@calibration,@safety,@packing,@Notes)"; 
     connect.Open(); 
     using (OleDbCommand command = new OleDbCommand(QueryText)) 
     { 
      try 
      { 
       OleDbDataAdapter da = new OleDbDataAdapter("INSERT INTO lineAudit", connect); 

       String dateTime = dateTime_bx.Text; 
       String auditor = auditor_bx.Text; 
       String operador = opId_bx.Text; 
       String partNumber = partNumber_bx.Text; 
       String shopOrder = shopOrder_bx.Text; 
       String operationNumber = opNumber_bx.Text; 
       String q1 = q1_bx.Text; 
       String q2 = q2_bx.Text; 
       String q3 = q3_bx.Text; 
       String q4 = q4_bx.Text; 
       String q5 = q5_bx.Text; 
       String q6 = q6_bx.Text; 
       String q7 = q7_bx.Text; 
       String note = noteStr_bx.Text; 

       command.Parameters.AddWithValue("@dateTime", this.dateTime_bx.Text); 
       command.Parameters.AddWithValue("@auditor", this.auditor_bx.Text); 
       command.Parameters.AddWithValue("@operator", this.opId_bx.Text); 
       command.Parameters.AddWithValue("@partNumber", this.partNumber_bx.Text); 
       command.Parameters.AddWithValue("@shopOrder", this.shopOrder_bx.Text); 
       command.Parameters.AddWithValue("@operationNumber", this.opNumber_bx.Text); 
       command.Parameters.AddWithValue("@documentationAndRevision", this.q1_bx.Text); 
       command.Parameters.AddWithValue("@labeling", this.q2_bx.Text); 
       command.Parameters.AddWithValue("@conformity", this.q3_bx.Text); 
       command.Parameters.AddWithValue("@procedure", this.q4_bx.Text); 
       command.Parameters.AddWithValue("@calibration", this.q5_bx.Text); 
       command.Parameters.AddWithValue("@safety", this.q6_bx.Text); 
       command.Parameters.AddWithValue("@packing", this.q7_bx.Text); 
       command.Parameters.AddWithValue("@Notes", this.noteStr_bx.Text); 

       command.ExecuteNonQuery(); 
       //connect.Close(); 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show(ex.Message); 
       connect.Close(); 
      } 
     } 

    } 

    private void dateTime_bx_TextChanged(object sender, EventArgs e) 
    { 
    } 
    } 
}

источник

2017-01-31 dreamheart

Та часть, которая отправить данные в базу данных находится в нижней части коды, то есть строка комментария для «// Отправки данных в базу данных» – dreamheart

Вам необходимо пройти подключение к конструктору для ' OleDbCommand'. Кстати, почему у вас есть и «OleDbCommand», и «OleDbDataAdapter»? Я не вижу, чтобы адаптер использовался для чего-либо. –

Достаточно стена кода, если проблема 'находится в нижней части кода – Plutonix

Сообщите OleDbCommand, что соединение использовать после QueryText
Вместо:

using (OleDbCommand command = new OleDbCommand(QueryText))

использование:

using (OleDbCommand command = new OleDbCommand(QueryText, connect))

источник

2017-01-31 20:30:25

Спасибо за ответ @Charles Могу ли я сделать некоторые другие изменения, но это сработало! (Моя основная проблема заключалась в том, что когда я делал базу данных, я выбирал некоторые столбцы как целочисленные, и я отправлял ее через код в виде строки, мне также пришлось добавить [] к некоторым именам в моей строке вставки. Спасибо всем вам за вашу ответов: D – dreamheart

Что-то, как это должно работать для вас.

using ExcelToAccessLib; 
using System; 
using System.IO; 
using System.Windows.Forms; 

namespace WindowsFormsApplication1 
{ 
    public partial class Form1 : Form 
    { 
     private string AccessFile = Path.Combine( 
      AppDomain.CurrentDomain.BaseDirectory, "Database1.accdb"); 

     private string ExcelFile = Path.Combine( 
      AppDomain.CurrentDomain.BaseDirectory, "Customers.xlsx"); 

     public Form1() 
     { 
      InitializeComponent(); 
     } 

     private void button1_Click(object sender, EventArgs e) 
     { 
      Importer ImportData = 
       new Importer( 
        new ExcelInfo 
        { 
         FileName = ExcelFile, 
         HasHeaders = true, 
         SheetName = "Customers" 
        }, 
        new AccessInfo 
        { 
         FileName = AccessFile, 
         TableName = "Customers1", 
         FieldNames = "CompanyName,ContactName" 
        }); 

      if (ImportData.Run()) 
      { 
       MessageBox.Show("Import complete"); 
      } 
     } 
    } 
}

источник

2017-02-03 15:25:37 ryguy72

Отправка данных в базу данных acess

ответ

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