Question

I’ve question to ask.

I want to update table at backend in database through making changes in datagridview.
DataGridView changes should be reflected into the Database.

How can I achieve it?

Thank you…

Codes:

SqlCommand command;
            if (con.State == ConnectionState.Closed)
                con.Open();

            string updateQuery = @"UPDATE Hucre set VericiKB=@VericiKB Where OrtamKB=@OrtamKimlikBilgisi and HucreKB=@HucreKB";
            command = new SqlCommand(updateQuery, con);

            command.Parameters.Add("@VericiKB", SqlDbType.Int, 50, "VericiKB");
            SqlParameter param1 = command.Parameters.Add("@HucreKB", SqlDbType.Int, 50, "HucreKB");
            SqlParameter param2 = command.Parameters.Add("@OrtamKB", SqlDbType.Int, 50, "OrtamKB");

            param1.SourceVersion = DataRowVersion.Original;
            param2.SourceVersion = DataRowVersion.Original;

            da.UpdateCommand = command;

Answer 1

Where or what is da.UpDateCommand = command;..?
within that

refactor your code by wrapping Try Catch {} blocks

SqlCommand command = null;
try
{
  if (con.State == ConnectionState.Closed)
  {
      con.Open();
  }

  string updateQuery = @"UPDATE Hucre set VericiKB=@VericiKB 
         WHERE OrtamKB=@OrtamKimlikBilgisi and HucreKB=@HucreKB";
  command = new SqlCommand(updateQuery, con);
  command.Parameters.AddWithValue("@VericiKB", "VericiKB");//pass a variable here 
  SqlParameter param1 = command.Parameters.AddWithValue("@HucreKB", "HucreKB");//pass a variable here
  SqlParameter param2 = command.Parameters.AddWithValue("@OrtamKB", "OrtamKB");//pass a variable here
  param1.SourceVersion = DataRowVersion.Original;
  param2.SourceVersion = DataRowVersion.Original;
  //what is this ..??? da.UpdateCommand = command;
  command.ExecuteNonQuery;
 }
 catch (Exception e)
 {
    //Write or trap your exception here..
 }

//when you are done release the SQLCommand objects