Question

This is what I have done:

protected void btnsave_Click(object sender, EventArgs e)
{
    SqlConnection con = new SqlConnection("Data Source=user-ade4de77d3;Initial Catalog=test;Persist Security Info=True;uid=sa;pwd=sql2008");
    SqlCommand cmd = new SqlCommand();
    cmd.Connection = con;
    con.Open();
    cmd.CommandText = ("INSERT  into person VALUES (@empid,@name,@sex,@mstatus,@empstat,@dob,@doh,@dor,@dot)");
    cmd.Parameters.AddWithValue("@empid", txtid.Text);
    cmd.Parameters.AddWithValue("@name", txtnam);
    cmd.Parameters.AddWithValue("@sex", dpsex.SelectedValue);
    cmd.Parameters.AddWithValue("@mstatus", dpmstat.SelectedValue);
    cmd.Parameters.AddWithValue("@empstat", dpstatus.SelectedValue);
    cmd.Parameters.AddWithValue("@dob", txtdob.Text );
    cmd.Parameters.AddWithValue("@doh", txtdoh.Text );
    cmd.Parameters.AddWithValue("@dor", txtdor.Text );
    cmd.Parameters.AddWithValue("@dot", txtdot.Text );
    cmd.ExecuteNonQuery();
    con.Close();
}

I’m getting an error like this:

No mapping exists from object type System.Web.UI.WebControls.TextBox to a known managed provider native type.

How do I clear this error?

Answer 1

You need to change the following line:

cmd.Parameters.AddWithValue("@name", txtnam.Text);

as your version is missing the .Text off the end.