doubt in asp.net abt comparison

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hi this is my code

C#

adp = new SqlDataAdapter("select tenderamount from tender", con);
       ds = new DataSet();
       adp.Fill(ds, "tender");
       if (ds.Tables["tender"].Rows.Count > 0)
       {
           if (TextBox5.Text > ds.Tables["tender"].Rows[0][1].ToString())
           {
               Response.Redirect("Payment.aspx?BidAmount=" + TextBox5.Text + "&TenderName=" + DropDownList1.Text);
           }
           else
           {
               Label3.Text = "sorry Your bid amount is low";
           }
       }

i want to compare the data form textbox and table value in sql then only it will redirect to new page, pls help me, i wnt to finsh it now

Posted 8-Mar-11 22:41pm

dhanyasri

Updated 8-Mar-11 22:59pm

v2

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m@dhu 9-Mar-11 5:06am

Are you getting any error. Did you check AlbinAbel's answer.

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Albin Abel · Answer 1 · 2011-03-08T22:47:00

Solution 1

if (TextBox5.Text > ds.Tables["tender"].Rows[0][1].ToString()). You are comparing two string with > operator. This may not work well.

If those values are numbers then use

if (Convert.ToInt32(TextBox5.Text) > Convert.ToInt32(ds.Tables["tender"].Rows[0][1].ToString()))

Posted 8-Mar-11 22:47pm

Albin Abel

Comments

Sergey Alexandrovich Kryukov 9-Mar-11 15:32pm

I would question string ordering in principle. Why doing that? You code with Convert may be not better as we don't know the purpose. ToInt32 can also through exception; who knows how to interpret it. I suspect the question simply makes no sense, re-thinking of approach is needed, not the answer as such.
(I did not vote this time.)
--SA