带条件的SQL Server存储过程

Question

I'm trying to create a conditional event when I press an <asp:button> in C#.

I have a GridView related to two database tables (in SQL Server). I should insert different values in one of them, every day.

Inside the GridView :

• I have a BoundField with the ID for each item inside the database table
• I have two TemplateFields with a textbox, named StartGV and EndGV

Outside the GridView :

• I have an <asp:TextBox> with an AjaxCalendarExtender . There I should select the date. The textbox is TextDate

So, when I press the <asp:button> , the event should:

• check for each row in the Gridview (with the ID from the GridView 's first column and the date selected in the textbox outside the GridView ) if the record already exists in the database

  • If yes, the database record should be updated with the new values
  • If no, the a new record should be inserted with the values

I'm using stored procedures for update and insert.

This is the code in C#:

protected void BotonSubmit_Click(object sender, EventArgs e)
{
        foreach (GridViewRow row in GridView1.Rows)
        {
            //HERE I SAVE THE TEXTBOXS FROM GRIDVIEW INSIDE A VARIABLE
            TextBox StartGV = row.FindControl("StartGV") as TextBox;
            TextBox EndGV = row.FindControl("EndGV") as TextBox;
            DateTime Date = DateTime.ParseExact(TextDate.Text, "MM/dd/yyyy", CultureInfo.InvariantCulture);

            //HERE I EXTRACT THE VALUE FROM THE FIRST COLUMN (THE ID)
            if (row.RowType == DataControlRowType.DataRow)
            {
                string ID = row.Cells[0].Text;

            //HERE I CHECK IF THE ROW ALREADY EXISTS IN DATABASE TABLE:

                //IF YES, UPDATE:
                if (CADCATOPS.CADBatchHandoff.CheckTableDB(Convert.ToInt32(ID), Convert.ToString(Date)))
                {
                    string connectionString = @"MY CONNECTION STRING";
                    SqlConnection Connection1 = null;
                    SqlTransaction Transaction1 = null;
                    {
                        Connection1 = new SqlConnection();
                        Connection1.ConnectionString = connectionString;
                        Connection1.Open();
                        Transaction1 = Connection1.BeginTransaction(System.Data.IsolationLevel.Serializable);
                        SqlCommand command1 = new SqlCommand("UPDATE", Connection1, Transaction1);
                        command1.CommandType = CommandType.StoredProcedure;
                        command1.Parameters.Clear();
                        command1.Parameters.AddWithValue("@Start", Convert.ToDateTime(StartGV.Text));
                        if (EndGV.Text != "")
                        {
                            command1.Parameters.AddWithValue("@End", Convert.ToDateTime(EndGV.Text));
                        }
                        command1.ExecuteNonQuery();
                        Transaction1.Commit();
                        Connection1.Close();
                    }
                }

                //IF NO, INSERT:
                if (!CADCATOPS.CADBatchHandoff.CheckTableDB(Convert.ToInt32(IDBatch), Convert.ToString(FechaCT1)))
                {
                    //FIRST OF ALL, CHECK IF THE "STARTGV" TEXTBOX IS NOT EMPTY. IF IT'S EMPTY, THE PROCESS WILL NOT START FOR THIS ROW.
                    if (StartGV.Text != "")
                    {
                        string connectionString = @"MY CONNECTION STRING";
                        SqlConnection Connection1 = null;
                        SqlTransaction Transaction1 = null;
                        {
                        Connection1 = new SqlConnection();
                        Connection1.ConnectionString = connectionString;
                        Connection1.Open();
                        Transaction1 = Connection1.BeginTransaction(System.Data.IsolationLevel.Serializable);
                        SqlCommand command1 = new SqlCommand("INSERT", Connection1, Transaction1);
                        command1.CommandType = CommandType.StoredProcedure;
                        command1.Parameters.Clear();
                        command1.Parameters.AddWithValue("@Start", Convert.ToDateTime(StartGV.Text));
                        if (EndGV.Text != "")
                        {
                            command1.Parameters.AddWithValue("@End", Convert.ToDateTime(EndGV.Text));
                        }
                        comando.Parameters.AddWithValue("@ID", Convert.ToInt32(ID));
                        comando.Parameters.AddWithValue("@DATE", Convert.ToDateTime(DATE.Text));
                        command1.ExecuteNonQuery();
                        Transaction1.Commit();
                        Connection1.Close();
                        }
                    }
                }
            }
        }
    }

So, this is working but something is wrong:

• The INSERT condition works fine.

• The UPDATE is not working ok: the "StartGV" and EndGV" values selected for the process is ALWAYS the same as the last row. This is not happening with the INSERT process.

Why could it be?

Edit

I forget to show the SELECT statements in my project:

Inside the table adapter, I have created this query, named CheckTableDB :

SELECT COUNT(*) 
FROM BatchDatos 
WHERE (ID = @ID) and (DATE=@DATE)

And then, in c#:

public static bool CheckTableDB(int ID, string DATE)
{
    return adapter.CheckTableDB(ID, DATE) != 0;
}

I use this for UPDATE and INSERT . It's working ok for INSERT , that means the issue is not here.

Answer 1

Without condition where you update all rows in the table. You need to use ID from your GV to update exact row in the DB.