DataRow is zeroising the decimal part of a decimal when updating Datatable

Question

I am trying to update a DataTable that is retrieved from a DB before binding it to a Gridview.

However, when I update decimal fields the part after the decimal point is zeroised. What am I missing?

if (HttpContext.Current.Request.IsAuthenticated)
{
    // Get additional price matches
    using (SqlConnection stockConn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ConnectionString))
    {
        // Check for trade match offer
        SqlCommand tradePCCheck = new SqlCommand("getAllMyPriceMatches", stockConn);
        tradePCCheck.CommandType = CommandType.StoredProcedure;
        SqlParameter email = tradePCCheck.Parameters.Add("@email", SqlDbType.NVarChar);
        try
        {
            email.Value = this.Context.User.Identity.Name;
        }
        catch
        {
            email.Value = " ";
        }
        SqlParameter thedate = tradePCCheck.Parameters.Add("@theDate", SqlDbType.DateTime);
        thedate.Value = DateTime.Now.AddHours(-50);

        stockConn.Open();
        SqlDataReader pcReader = tradePCCheck.ExecuteReader();
        pms.Load(pcReader);
        pcReader.Close();
        stockConn.Close();
    }
}

//Set Connection, Open the DB & Fill Data Set

using (SqlConnection stockConn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ConnectionString))
{
    SqlCommand stockCommand = new SqlCommand("getTISearchResults", stockConn);
    stockCommand.CommandType = CommandType.StoredProcedure;
    SqlParameter keyword = stockCommand.Parameters.Add("@keyword", SqlDbType.NVarChar);
    keyword.Value = prefixText;
    stockConn.Open();
    SqlDataReader rd = stockCommand.ExecuteReader();
    searchResults.Load(rd);
    stockCommand.Dispose();
    rd.Dispose();
}

// Update Results with elevated prices...
foreach (DataRow dr in searchResults.Rows)
{
    // Check for PMS
    DataRow[] thePMS = pms.Select("tpc_stockid = '" + dr["stockitem_number"].ToString() + "'");

    if (thePMS.Length > 0)
    {
        decimal px = 0;
        decimal cash = 0;

        if (thePMS[0]["tpc_pricepx"] != null && !thePMS[0]["tpc_pricepx"].ToString().Equals(""))
        {
            px = Convert.ToDecimal(thePMS[0]["tpc_pricepx"]);
        }

        if (thePMS[0]["tpc_price"] != null && !thePMS[0]["tpc_price"].ToString().Equals(""))
        {
            cash = Convert.ToDecimal(thePMS[0]["tpc_price"]);
        }
        // update table and accept changes
        DataRow[] theRows = searchResults.Select("stockitem_number = '" + dr["stockitem_number"].ToString() + "' ");

        if (theRows.Length > 0)
        {
            theRows[0]["stockitem_pxprice"] = px;
            theRows[0]["stockitem_cashprice"] = cash;
            searchResults.AcceptChanges();
        }
    }
}

gvSearchResults.DataSource = searchResults;
gvSearchResults.DataBind();

I have output PX and Cash before the assignment and they hold the correct values of 800.19 and 500.12, but after the AcceptChanges and once they are bound, the output is 800.00 and 500.12.

theRows[0]["stockitem_pxprice"] & theRows[0]["stockitem_cashprice"] are both decimal(5,2) on the DB where the searchResultsDT is populated from.

Any help greatly appreciated.

Thanks.

Answer 1

Yes you are missing string.format while setting value into grid. You need to format double before setting it.

Say for if you get a number like 4.506 it will display something like 4.5060 or if you have a number like 4.5 then it will display as 4.50.

I have faced this problem in templated gridview and had to use string.format and format specifier to resolve it.