Question

I have created a small table of student info in MS Access 2007. The table name is “stdinfo” and fields are rollno,sname,sfather,address.
Now i want to display the table fields in asp.net application.

code behind code is

protected void Page_Load(object sender, EventArgs e)
        {
            string ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:|Users|mac|Desktop|db.accdb;";
            OleDbConnection cn = new OleDbConnection(ConnectionString);
            OleDbCommand cmd = new OleDbCommand();
            cmd.CommandText = "Select * from stdinfo";
            cmd.Connection = cn;
            cn.Open();
            rolllbl.Text = Convert.ToString(cmd.ExecuteNonQuery());
            cn.Close();
        }

and aspx code is

<p>
        <asp:Label ID="rolllbl" runat="server" Text="RollNo."></asp:Label>
&nbsp;&nbsp;&nbsp;
    </p>
    <p>
        &nbsp;<asp:Label ID="namelbl" runat="server" Text="Name"></asp:Label>
&nbsp;</p>
    <p>
        <asp:Label ID="fnamelbl" runat="server" Text="Fname"></asp:Label>
&nbsp;&nbsp;&nbsp;
    </p>
    <p>
        <asp:Label ID="addlbl" runat="server" Text="Address"></asp:Label>
    </p>

I did not wish to write the connection string in web config file. I am using VS 2010.

Is there any thing i need to add in the code behind ? the code is not working…

Answer 1

You have to change your code.

protected void Page_Load(object sender, EventArgs e)
    {
        string ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:|Users|mac|Desktop|db.accdb;";
        OleDbConnection cn = new OleDbConnection(ConnectionString);
        OleDbCommand cmd = new OleDbCommand();
        cmd.CommandText = "Select * from stdinfo";
        cmd.Connection = cn;
        cn.Open();
        DataTable dt = new DataTable();
        dt.Load(cmd.ExecuteReader());  // temporary storing data in a data table
        cn.Close();

     // Now assign the values to the label
           rolllbl.Text = dt.Rows[0]["ColumnName"].ToString();
           namelbl.Text = dt.Rows[0]["ColumnName"].ToString();
           fnamelbl.Text = dt.Rows[0]["ColumnName"].ToString();
           addlbl.Text = dt.Rows[0]["ColumnName"].ToString();               

            // OR  If you query returns multiple rows then use gridview 

        gv.DataSource = dt;
        gv.DataBind();  // binding grid   

    }

ExecuteNonQuery method returns the no. of rows affected, You will not get anything by converting into a string.
Also you can also use a gridview control

<asp:GridView ID="gv" runat="server" >
     <Columns>
         <asp:BoundField DataField="ColumnName" TextField="Roll No" />
         <asp:BoundField DataField="ColumnName" TextField="Name" />
         <asp:BoundField DataField="ColumnName" TextField="First Name" />
         <asp:BoundField DataField="ColumnName" TextField="Address" />
     </Columns>
</asp:GridView>

Output:
Roll NO | Name | First Name | Address