How to retrieve data from database in label

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I want to retrieve student ID from database. Here is my code what i have tried but it is not displaying anything.

Thanks...

What I have tried:

protected void Button2_Click(object sender, EventArgs e)
{

SqlConnection con = new SqlConnection("Data Source=DESKTOP-Q69PRF4;Initial Catalog=new;Integrated Security=True");

if (con.State == ConnectionState.Open)
{
con.Close();
}
con.Open();
string str = "select * from StRecords where StID='" + Session["login"] + "'";
SqlCommand com = new SqlCommand(str, con);
SqlDataAdapter da = new SqlDataAdapter(com);
DataSet ds = new DataSet();
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
Label11.Text = dt.Rows[0]["StID"].ToString();

}

}

Posted 19-Sep-17 20:15pm

Member 13361792

Updated 19-Sep-17 21:50pm

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Comments

Prifti Constantine 20-Sep-17 2:39am

You should just address the Datatable solely and say
Label11.Text= dt["StID"].ToString();
I dont think there is a need for a dataset in this situation... I hope this helps you out!

Karthik_Mahalingam 20-Sep-17 4:17am

keep a break point and see what value you are getting in the session and try to run the query in sql studio and check whether it returns any data

Member 13361792 20-Sep-17 5:05am

no session is not returning a value..
Can u plz help me how to do it

Animesh Datta 20-Sep-17 6:20am

Check why the value of Session["login"] is empty or null. Put breakpoint and debug it.

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Member 13339456 · Answer 1 · 2017-09-19T21:50:00

Try this

 DataTable dt = new DataTable();
            try
            {
                con = da_con.DA_Connect();
                SqlCommand cmd = new SqlCommand("FetchShopSellerOnId", con);
                cmd.CommandType = CommandType.StoredProcedure;
                SqlDataAdapter sqlDa = new SqlDataAdapter();
                sqlDa.SelectCommand = cmd;
                sqlDa.Fill(dt);
<pre> foreach (DataRow dRow in dt.Rows)
                {
                    if (dt.Rows.Count > 0)
                    {
           Label11.Tex   = dRow["ShopOfficeDetailsId"].ToString();

                  }
}

In Above Code

dRow["ShopOfficeDetailsId"].ToString();

ShopOfficeDetailsID is used in stored procedure eg. Select ShopOfficeDetailsID ,, You can use your ID name