Please Reslove me from this error {"Cannot find table 0."}

Question

protected void btnsubmit_Click(object sender, EventArgs e)
{
    SqlConnection con = new SqlConnection(connectionString);
    con.Open();
    SqlCommand cmd = new SqlCommand("spGettblemployeeBydepartment", con);
    cmd.Parameters.AddWithValue("@commandtype", "insert");
    int employeeid = Convert.ToInt32(cmd.ExecuteNonQuery());
    SqlDataAdapter sda = new SqlDataAdapter(cmd);
    DataSet ds = new DataSet();
    //TextBox CategoryID = (TextBox)GridView1.Rows[0].FindControl("txtemployeeid");
    // cmd.Parameters.AddWithValue("employeeid", Convert.ToInt32(txtemployeeid));
    cmd.Parameters.AddWithValue("@employeename", Convert.ToString(txtemployeename.Text.Trim()));
    cmd.Parameters.AddWithValue("@departmentname", Convert.ToString(txtdepartmentname.Text.Trim()));
    cmd.Parameters.AddWithValue("@employeeaddress", Convert.ToString(txtemployeeaddress.Text.Trim()));
    //GridView1.DataSource = ds.Tables[1].DefaultView;
    Bindgrid();
    con.Close();
    //GridView1.DataSource = ds;
    //GridView1.DataBind();
    // DataSet ds = new DataSet();
    sda.Fill(ds);
    GridView1.DataSource = ds;
    //GridView1.DataMember = ds.Tables[0].TableName;
    GridView1.DataSource = ds.Tables[0];
    GridView1.DataBind();

}