如何使用DataAdapter通过可变参数在C＃中调用存储过程

Question

I am calling the following code in C# to fill a dataAdapter with a given stored procedure "sp1_name" . The problem is that I want to call different stored procedures with different parameters. (All SP's do a SELECT) Let's suppose that my stored procedure name is "SP_SOMESP" , then everything works fine.

Let's suppose that my stored procedure name is "SP_SOMESP @Month= 10, @Year = 2010" , then it doesn't work. It throws an exception that cannot find this stored procedure.

Any solutions?

Thanks!

//First Connection - SP1
using (SqlConnection con = new SqlConnection(conStr))
{
            using (SqlCommand cmd = new SqlCommand(sp1_name, con)) //sp1_name = NAME + PARAMETERS
            {
                cmd.CommandTimeout = 3600;
                cmd.CommandType = CommandType.StoredProcedure;

                using (SqlDataAdapter dataAdapter = new SqlDataAdapter(cmd))
                {
                    dataAdapter.Fill(results2);
                }

            }
}

Answer 1

You have to add in the parameters programmatically, see SqlCommand.Parameters .

It would be something like

cmd.Parameters.AddWithValue("@Month", 10);
cmd.Parameters.AddWithValue("@Year", 2010);

This would be after the command is declared and before it is executed.

If you find that you need to delcare the data type, then try it this way

cmd.Parameters.Add("@Month", SqlDbType.Int).Value = 10;

Answer 2

First Issue:
Parameters in a stored procedure shouldn't be included along with its name
Second Issue:
Having a space in names of stored procedure isn't a good practice.
And for code behind

using(SqlConnection con = new SqlConnection("Your Connection String Here"))
{ 
    SqlCommand cmd = new SqlCommand("sp_SomeName", con);
    cmd.CommandType = CommandType.StoredProcedure;

    //the 2 codes after this comment is where you assign value to the parameters you
    //have on your stored procedure from SQL
    cmd.Parameters.Add("@MONTH", SqlDbType.VarChar).Value = "someValue";
    cmd.Parameters.Add("@YEAR", SqlDbType.VarChar).Value = "SomeYear";

    SqlDataAdapter da = new SqlDataAdapter(cmd);
    SqlDataSet ds = new SqlDataSet();
    da.Fill(ds); //this is where you put values you get from the Select command to a 
  //dataset named ds, reason for this is for you to fetch the value from DB to code behind

    foreach(DataRow dr in ds.Tables[0].Rows) // this is where you run through the dataset and get values you want from it.
    {
       someTextBox.Text = dr["Month"].ToString(); //you should probably know this code
    }
}

Answer 3

Check this,

using (SQLCommand cmd = new SQLCommand())
{
cmd.CommandText = "SP_SOMESP";
cmd.Parameters.Add("@Month", 10);
cmd.Parameters.Add("@Year", 2010);
cmd.CommandTimeout = 3600;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Connection = con;
}
using (SqlDataAdapter dataAdapter = new SqlDataAdapter(cmd))
{
  dataAdapter.SelectCommand = cmd;
  dataAdapter.Fill(results2);
}