如何在C＃中的数据集中设置十进制值？

Question

I have a Column AMOUNT_PAISE in Dataset. I'm binding this dataset from the result set coming from sql server stored procedure. for AMOUNT_PAISE column in DB currency is in paise(lets say 888 paise for a particular row) but I want to display this amount in Rupees(Rupee equivalenof 888 paise is 8.88). But I can not directly assign it, because dataset contains int64 values. when I convert decimal 888 to int64 it gives 9 (888/100 = 8.88 and when converted to int64 it gives 9) So Please tell me what should I try now.

formula to convert from paise to rupee.

rupee = paise/ 100; //upto 2 decimal points

if (dsTransactionLogs.Tables.Count > 0)
{
    if (dsTransactionLogs.Tables[0].Rows.Count > 0)
    {

        //Code to convert amount from Paise to Rs.
        int i = 0;
        foreach (DataRow row in dsTransactionLogs.Tables[0].Rows)
        {
            decimal decimalAmountInPaise = Convert.ToDecimal(dsTransactionLogs.Tables[0].Rows[i]["AMOUNT_PAISE"]);
            decimalAmountInPaise = Math.Round(decimalAmountInPaise / 100, 2);
            //Int64 int64AmountInPaise = Convert.ToInt64(decimalAmountInPaise);
            string strAmount = decimalAmountInPaise.ToString("#.##");
            dsTransactionLogs.Tables[0].Rows[i]["AMOUNT_PAISE"] = Convert.ToInt64(strAmount);
            i++;

        }

        GridViewTRANSACTIONDETAILS.DataSource = dsTransactionLogs;
        GridViewTRANSACTIONDETAILS.DataBind();
        transactionGVDiv.Style.Add("height", "400px");
        //LabelNoTransactionLogsID.Visible = false;
    }
    else
    {
        //LabelNoTransactionLogsID.Visible = true;
    }
}

this is aspx code for this column in gridview.

<asp:TemplateField ItemStyle-HorizontalAlign="Center" HeaderText="Amount"> 
<ItemTemplate> 
    <asp:Label runat="server" ID="AmountLbl" NavigateUrl="#" Text='<%#Eval("AMOUNT_PAISE") %>'> ></asp:Label>
</ItemTemplate>
</asp:TemplateField>

Answer 1

Just Change you line :

 dsTransactionLogs.Tables[0].Rows[i]["AMOUNT_PAISE"] = Convert.ToInt64(strAmount);

to

dsTransactionLogs.Tables[0].Rows[i]["AMOUNT_PAISE"] = strAmount;

Answer 2

I suggest you do the conversion when displaying, rather than attempting to modify the DataTable. Ie replace:

... Text='<%#Eval("AMOUNT_PAISE") %>'> ...

by something like:

... Text='<%#  (Convert.ToDecimal(Eval("AMOUNT_PAISE")) / 100M).ToString("N2") %>'> ...