Data source is an invalid type. It must be either an ilistsource, ienumerable, or idatasource.

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1.00/5 (1 vote)

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Hello everyone, I am tried most of the thing but didn't got the perfect solution if you can all can help

What I have tried:

int id = Convert.ToInt32(Session["UserID"]);
        string connection = ConfigurationManager.AppSettings["Connection"].ToString();

        using (SqlConnection con = new SqlConnection(connection))
        {
            con.Open();
            using (SqlCommand cmd = new SqlCommand("Score_Page", con))
            {

                cmd.Parameters.AddWithValue("@ID", id);
                DataTable cop = new DataTable();
                SqlDataAdapter sad = new SqlDataAdapter(cmd);
                cmd.CommandType = CommandType.StoredProcedure;
                sad.Fill(cop);
                int sco = (int)cop.Rows[0][0];
                int scr = percentage();
                int sro = (int)((sco * 100) / scr);
                //int.TryParse(cop.Rows[0][0].ToString(), out sro);
                con.Close();
                GridView1.DataSource = sro;
                GridView1.DataBind();

Posted 10-Jul-17 0:07am

Member 11644373

Updated 10-Jul-17 0:30am

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Karthik_Mahalingam · Accepted Answer · 2017-07-10T00:20:00

Solution 1

GridView1.DataSource = cop;

Posted 10-Jul-17 0:20am

Karthik_Mahalingam

Comments

Member 11644373 10-Jul-17 6:25am

here em trying to get percentage using int sro = (int)((sco * 100) / scr);

as sco contain 3 value and scr contain 5 so sro= 60% and i want to show this as result if i use GridView1.DataSource = cop; it will return 3 as result as according to select query

Karthik_Mahalingam 10-Jul-17 6:39am

 DataTable dt = new DataTable();
            dt.Columns.Add("ColumnHeader");
            dt.Rows.Add(sro);
            GridView1.DataSource = dt;
            GridView1.DataBind();

Maciej Los 11-Jul-17 2:13am

5!

Karthik_Mahalingam 11-Jul-17 2:20am

Thank you Maciej

F-ES Sitecore · Accepted Answer · 2017-07-10T00:30:00

Solution 2

Without knowing exactly what you want the GridView to show it's impossible to help. If you only want the GridView so show a single value do this

GridView1.DataSource = new List<int>{ sro };

Posted 10-Jul-17 0:30am

F-ES Sitecore

Comments

Member 11644373 10-Jul-17 6:34am

here em trying to get percentage using int sro = (int)((sco * 100) / scr);

as sco contain 3 value and scr contain 5 . So sro= 60% and i want to show this as result if i use GridView1.DataSource = cop; it will return 3 as result as according to select query

Member 11644373 10-Jul-17 6:39am

Thankyou its working, But i want to ask why was it showing Data source is an invalid type. It must be either an ilistsource, ienumerable, or idatasource. Error

F-ES Sitecore 10-Jul-17 6:47am

The GridView is designed to show a list of items, ie more than one, so its DataSource property has to be set to some kind of collection. If you want to force it to show one item you need to make a list that contains just the one item you want to show.