方法'dispdata'的重载没有接受'0'参数 [英] No overload for method 'dispdata' takes '0' arguments

问题描述

错误::方法"dispdata"的无重载采用"0"参数

Error: : No overload for method ''dispdata'' takes ''0'' arguments

 public void dispdata(string catid)
    {
       
      
            con.Open();

            SqlCommand cmd = new SqlCommand(" select catname,catdesc from categoryDetail where catid=@catid ", con);
            cmd.Parameters.AddWithValue("@catid", catid);
            SqlDataReader dr = cmd.ExecuteReader();
            while (dr.Read())
            {
                txtcname.Text = dr["catname"].ToString();
                txtcatdesc.Text = dr["catdesc"].ToString();
            }
            con.Close();          

    }
protected void btnsubmit_Click(object sender, ImageClickEventArgs e)
    {
        SqlCommand cmd = new SqlCommand();
        con.Open();
        string str = "update categorydetail set catname='" + txtcname.Text + "' where catdesc='" + txtcatdesc.Text + "'";
        cmd = new SqlCommand(str, con);
        cmd.ExecuteNonQuery();
        Response.Redirect("CategoryDetail.aspx?Edit=Yes");
        con.Close();
        dispdata();

}

推荐答案

调用 dispdata 方法时，您需要将字符串值传递给catid.

更新:希望您已按照以下说明更正了代码

You need to pass a string value to catid, when you call dispdata method.

Update: Hope you have corrected your code as follows

protected void btnsubmit_Click(object sender, ImageClickEventArgs e)
    {
        SqlCommand cmd = new SqlCommand();
        con.Open();
        string str = "update categorydetail set catname='" + txtcname.Text + "' where catdesc='" + txtcatdesc.Text + "'";
        cmd = new SqlCommand(str, con);
        cmd.ExecuteNonQuery();
        Response.Redirect("CategoryDetail.aspx?Edit=Yes");
        con.Close();
        dispdata("ANY STRING VALUE");

}

问候
塞巴斯蒂安

Regards
Sebastian

这篇关于方法'dispdata'的重载没有接受'0'参数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！