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08.19.2008 at 03:31AM PDT, ID: 23659024
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9.3

ASP.NET Datareader Data table while loop

Asked by thomasmutton in Programming for ASP.NET

Tags: , ,

Hello experts.

I have a datareader that loops rows to create data table rows. The data table is then used to output into an XML file.

The problem i'm having is the first record is not being outputted into the XML. I think this is either a datareader/datatable or a loop problem.Start Free Trial 
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public static void UpdateXML()
    {
        SqlConnection myConnection = new SqlConnection(Configuration.DbConnectionString);
 
        SqlCommand cmd = new SqlCommand("SELECT newsticker_Text, newsticker_Status, newsticker_DateAdded FROM tbl_newsticker WHERE newsticker_Status = 'True'", myConnection);
        cmd.CommandType = CommandType.Text;
 
        SqlDataReader datareader = null;
        try
        {
            // Open the connection
            myConnection.Open();
 
            // Create the datatable and the datatable row
            DataTable datatable = new DataTable("item");
            DataRow datarow;
 
            datareader = cmd.ExecuteReader();
            if (datareader != null && datareader.Read())
            {
                // Columns
                datatable.Columns.Add("header");
                datatable.Columns.Add("date");
 
                while (datareader.Read())
                {
                    // Rows
                    datarow = datatable.NewRow();
 
                    string strText = Utilities.Db_Output((string)datareader["newsticker_Text"]);
                    DateTime dtDate = Convert.ToDateTime(datareader["newsticker_DateAdded"]);
                    string strDate = Convert.ToString(dtDate.Day + "/" + dtDate.Month + "/" + dtDate.Year);
 
                    datarow[0] = strText;
                    datarow[1] = strDate;
                    datatable.Rows.Add(datarow);
                }
            }
            else
            {
                // Columns
                datatable.Columns.Add("header");
                datatable.Columns.Add("date");
 
                // Rows
                datarow = datatable.NewRow();
 
                string strText = "There are currently no news headlines.";
                DateTime dtDate = DateTime.Now;
                string strDate = Convert.ToString(dtDate.Day + "/" + dtDate.Month + "/" + dtDate.Year);
 
                datarow[0] = strText;
                datarow[1] = strDate;
                datatable.Rows.Add(datarow);
            }
 
            // Create the dataset
            DataSet dataset = new DataSet("newsTicker");
            dataset.Tables.Add(datatable);
            dataset.GetXml();
 
            // Output the xml
            string strPath = HttpContext.Current.Server.MapPath("~/Data/ticker.xml");
            dataset.WriteXml(strPath);
        }
        finally
        {
            try
            {
                if (datareader != null)
                {
                    // Close the data reader
                    datareader.Close();
                }
                // Close the connection
                myConnection.Close();
            }
            catch (SqlException)
            {
                // handle the exception
                throw;
            }
        }
    }
[+][-]08.19.2008 at 03:45AM PDT, ID: 22258539

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About this solution

Zone: Programming for ASP.NET
Tags: ASP.NET, n/a, n/a
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Solution Provided By: informaniac
Participating Experts: 1
Solution Grade: A
 
 
 
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