C# sql INSERT value from gridview

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I am trying get value from gridview and decrement it and it work, but insert it to database can't work. What's wrong?

C#

protected void GridView1_SelectedIndexChanged1(object sender, EventArgs e)
{
    m = GridView1.SelectedRow.Cells[5].Text;
    int nm = Convert.ToInt32(m);
    if (GridView1.SelectedRow.Cells[5].Text != "")
    {
        cn.Open();
        nm--;
        cmd.CommandText = ("INSERT INTO rezerwacje [miejsca] VALUES(@nm)");
        //cmd.ExecuteNonQuery();
        cmd.Clone();
        cn.Close();
    }

}

Posted 23-Apr-14 7:13am

Pawel Domasz

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[no name] 23-Apr-14 13:55pm

Mostly because you are not creating the parameters for your command and never executing your command. Why you are creating a clone of your command is a mystery.

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CHill60 · Answer 1 · 2014-04-23T07:57:00

Solution 1

You need to add the parameter for @nm e.g.

cmd.Parameters.Add("@nm", SqlDbType.SmallInt).Value = nm;

Secondly uncomment the line

C#

cmd.ExecuteNonQuery();

Thirdly get rid of

cmd.Clone();

Posted 23-Apr-14 7:57am

CHill60