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asp.net : Prevent Number From Getting Rounded
to enter only whole numbers. It should be validated so that the TextBox doesn't remain blank or any non-numeric data is entered in the TextBox. If the TextBox doesn't get validated, I want to display messages to the user which should be as precise as possible for the user to easily identify where he erred. This is how I did it: ========================================== If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text = "") Then lblMessage.Text = "Quantity cannot be blank" Else If Not (IsNumeric(CType(ea.Item.Cells(4).Controls(1), TextBox).Text)) Then lblMessage.Text = "Quantity must be a number" Else Response.Write(CType(ea.Item.Cells(4).Controls(1), TextBox).Text) If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text <= 0) Then lblMessage.Text = "Quantity must be greater than zero" Else Dim iQty As Integer iQty = CInt(CType(ea.Item.Cells(4).Controls(1), TextBox).Text) ......................... ......................... ......................... End If End If End If ========================================== The first 2 If conditions work correctly but the 3rd & the last one doesn't. If I enter 0.8 in the TextBox, then it automatically gets rounded to 1 & hence doesn't display the message "Quantity must be greater than zero" though the Response.Write statement just before the last If condition outputs the TextBox value as 0.8. Same is the case if I enter 0.2 in the TextBox; it automatically gets rounded to 0. How do I prevent the TextBox value from getting rounded when the Form is submitted?
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rn5a@rediffmail.com wrote: > A Web Form has a TextBox within a DataGrid wherein users are expected > to enter only whole numbers. It should be validated so that the > TextBox doesn't remain blank or any non-numeric data is entered in the > TextBox. If the TextBox doesn't get validated, I want to display > messages to the user which should be as precise as possible for the > user to easily identify where he erred. This is how I did it: > > ========================================== > If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text = "") Then > lblMessage.Text = "Quantity cannot be blank" > Else > If Not (IsNumeric(CType(ea.Item.Cells(4).Controls(1), > TextBox).Text)) Then > lblMessage.Text = "Quantity must be a number" > Else > Response.Write(CType(ea.Item.Cells(4).Controls(1), > TextBox).Text) > If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text <= 0) > Then > lblMessage.Text = "Quantity must be greater than zero" > Else > Dim iQty As Integer > > iQty = CInt(CType(ea.Item.Cells(4).Controls(1), > TextBox).Text) > ......................... > ......................... > ......................... > End If > End If > End If > ========================================== > > The first 2 If conditions work correctly but the 3rd & the last one > doesn't. If I enter 0.8 in the TextBox, then it automatically gets > rounded to 1 & hence doesn't display the message "Quantity must be > greater than zero" though the Response.Write statement just before the > last If condition outputs the TextBox value as 0.8. Same is the case > if I enter 0.2 in the TextBox; it automatically gets rounded to 0. > > How do I prevent the TextBox value from getting rounded when the Form > is submitted? > You are rounding the value when you convert it into an integer. When you have determined that it's a number, convert into a Double, then do the range check on the Double. -- Göran Andersson _____
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On Feb 27, 1:08 pm, G=F6ran Andersson <g...@guffa.com> wrote: > r...@rediffmail.com wrote: > > A Web Form has a TextBox within a DataGrid wherein users are expected > > to enter only whole numbers. It should be validated so that the > > TextBox doesn't remain blank or any non-numeric data is entered in the > > TextBox. If the TextBox doesn't get validated, I want to display > > messages to the user which should be as precise as possible for the > > user to easily identify where he erred. This is how I did it: > > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text =3D "") Then > > lblMessage.Text =3D "Quantity cannot be blank" > > Else > > If Not (IsNumeric(CType(ea.Item.Cells(4).Controls(1), > > TextBox).Text)) Then > > lblMessage.Text =3D "Quantity must be a number" > > Else > > Response.Write(CType(ea.Item.Cells(4).Controls(1), > > TextBox).Text) > > If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text <=3D 0) > > Then > > lblMessage.Text =3D "Quantity must be greater than zero" > > Else > > Dim iQty As Integer > > > iQty =3D CInt(CType(ea.Item.Cells(4).Controls(1), > > TextBox).Text) > > ......................... > > ......................... > > ......................... > > End If > > End If > > End If > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > > The first 2 If conditions work correctly but the 3rd & the last one > > doesn't. If I enter 0.8 in the TextBox, then it automatically gets > > rounded to 1 & hence doesn't display the message "Quantity must be > > greater than zero" though the Response.Write statement just before the > > last If condition outputs the TextBox value as 0.8. Same is the case > > if I enter 0.2 in the TextBox; it automatically gets rounded to 0. > > > How do I prevent the TextBox value from getting rounded when the Form > > is submitted? > > You are rounding the value when you convert it into an integer. When you > have determined that it's a number, convert into a Double, then do the > range check on the Double. > > -- > G=F6ran Andersson > _____http://www.guffa.com- Hide quoted text - > > - Show quoted text - Something's eerie somewhere in this Google archive because immediately after posting my question in *this* thread, I had deleted it but Goran still managed to answer it!! Nevertheless, thanks a lot for your suggestion, Goran.
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On Feb 27, 1:08 pm, G=F6ran Andersson <g...@guffa.com> wrote: > r...@rediffmail.com wrote: > > A Web Form has a TextBox within a DataGrid wherein users are expected > > to enter only whole numbers. It should be validated so that the > > TextBox doesn't remain blank or any non-numeric data is entered in the > > TextBox. If the TextBox doesn't get validated, I want to display > > messages to the user which should be as precise as possible for the > > user to easily identify where he erred. This is how I did it: > > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text =3D "") Then > > lblMessage.Text =3D "Quantity cannot be blank" > > Else > > If Not (IsNumeric(CType(ea.Item.Cells(4).Controls(1), > > TextBox).Text)) Then > > lblMessage.Text =3D "Quantity must be a number" > > Else > > Response.Write(CType(ea.Item.Cells(4).Controls(1), > > TextBox).Text) > > If (CType(ea.Item.Cells(4).Controls(1), TextBox).Text <=3D 0) > > Then > > lblMessage.Text =3D "Quantity must be greater than zero" > > Else > > Dim iQty As Integer > > > iQty =3D CInt(CType(ea.Item.Cells(4).Controls(1), > > TextBox).Text) > > ......................... > > ......................... > > ......................... > > End If > > End If > > End If > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > > The first 2 If conditions work correctly but the 3rd & the last one > > doesn't. If I enter 0.8 in the TextBox, then it automatically gets > > rounded to 1 & hence doesn't display the message "Quantity must be > > greater than zero" though the Response.Write statement just before the > > last If condition outputs the TextBox value as 0.8. Same is the case > > if I enter 0.2 in the TextBox; it automatically gets rounded to 0. > > > How do I prevent the TextBox value from getting rounded when the Form > > is submitted? > > You are rounding the value when you convert it into an integer. When you > have determined that it's a number, convert into a Double, then do the > range check on the Double. > > -- > G=F6ran Andersson > _____http://www.guffa.com- Hide quoted text - > > - Show quoted text - Something's eerie somewhere in this Google archive because immediately after posting my question in *this* thread, I had deleted it but Goran still managed to answer it!! Nevertheless, thanks a lot for your suggestion, Goran.
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On Mar 1, 2:09 am, G=F6ran Andersson <g...@guffa.com> wrote: > r...@rediffmail.com wrote: > > Something's eerie somewhere in this Google archive because immediately > > after posting my question in *this* thread, I had deleted it but Goran > > still managed to answer it!! > > > Nevertheless, thanks a lot for your suggestion, Goran. > > I am answering you in the newsgroup. > > Deleting a post in a copy of the newsgroup doesn't delete it from the > newsgroup. > > -- > G=F6ran Andersson > _____http://www.guffa.com Oops! I am sorry....after going through your response, I realized that it's just a copy of the newsgroup. BTW, any idea how does one delete his post from the original newsgroup?
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rn5a@rediffmail.com wrote: > Something's eerie somewhere in this Google archive because immediately > after posting my question in *this* thread, I had deleted it but Goran > still managed to answer it!! > > Nevertheless, thanks a lot for your suggestion, Goran. I am answering you in the newsgroup. Deleting a post in a copy of the newsgroup doesn't delete it from the newsgroup. -- Göran Andersson _____
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