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TryParse as validation for float 12 Years Ago by johnt68 … am missing something? Could someone please explain how to use TryParse with a float? Thank you:). [CODE]public float inputMethod() // this… OBTAIN initialTemp and OBTAIN Conversion type { float temp; if (float.TryParse(txtInitialTemp.Text))// get initial temp (converts string representation of number… Re: TryParse as validation for float 12 Years Ago by johnt68 …temp will have the value 1234.45 after the tryparse. and it returns temp which has the value … to do is validate it using a float.TryParse as I was told this was the best method…initialTemp and OBTAIN Conversion type { float temp; if (float.TryParse(txtInitialTemp.Text, out temp)) // get initial temp (converts … Re: TryParse as validation for float 12 Years Ago by johnt68 [QUOTE=gerard4143;1665568]try [code] float.TryParse(txtInitialTemp.Text, out temp) [/code][/QUOTE] Thanks gerard…OBTAIN initialTemp and OBTAIN Conversion type { float temp; if (float.TryParse(txtInitialTemp.Text, out temp)) { return temp; } else //if… Re: TryParse as validation for float 12 Years Ago by johnt68 … } public float inputMethod() { float temp; if (!float.TryParse(txtInitialTemp.Text, out temp)) return 0.0F; else return temp…and OBTAIN Conversion type { float temp; if (!float.TryParse(txtInitialTemp.Text, out temp)) { MessageBox.Show("… TryParse vs Exception 13 Years Ago by Momerath …as throwing an exception is slower than using the corresponding TryParse method. This short snippet shows the routines that I … 1/2 of which were 'bad' was: [code=text]TryParse took 1,142 milliseconds Exception took 56,179 milliseconds[/code…over 50 times slower. Get into the habit of using TryParse. Before you bring it up, yes parsing 100,000… Re: TryParse as validation for float 12 Years Ago by gerard4143 try [code] float.TryParse(txtInitialTemp.Text, out temp) [/code] Re: TryParse as validation for float 12 Years Ago by gerard4143 ….WriteLine( inputMethod() ); } public static float inputMethod() { float temp; if (float.TryParse("1234.45".ToString(), out temp)) { return temp; } else… Re: TryParse as validation for float 12 Years Ago by arunkumars …] public static float inputMethod() { float temp = 0.0f; if (float.TryParse("1234.45".ToString(), out temp)) { return temp; } return… Re: TryParse as validation for float 12 Years Ago by johnt68 … return a value. I have been told and read that TryParse is a better validation in this case but cannot seem… Re: TryParse as validation for float 12 Years Ago by arunkumars @john : its working for me, the out temp will have the value 1234.45 after the tryparse. and it returns temp which has the value to which it is being converted, may be there is a problm else where, why dnt you debug and come out with the problm.. Re: TryParse as validation for float 12 Years Ago by johnt68 … float inputMethod() > { > float temp; > > if (float.TryParse(txtInitialTemp.Text, out temp)) > { > return temp; > } >… Re: TryParse as validation for float 12 Years Ago by Mitja Bonca … number section "); } } public float inputMethod() { float temp; if (!float.TryParse(txtInitialTemp.Text, out temp)) return 0.0F; else return temp… Re: TryParse vs Exception 10 Years Ago by Mickey_1 … double value? bool doubleSuccess double b; doubleSuccess = double.TryParse(textBox1.text, out b); if (doubleSuccess) this.DialgogResult …; } NEXT double b; bool doubleSuccess = false; doubleSuccess = double.TryParse(textBox1.text, out b); if (!doubleSuccess) { string msg = &… Re: TryParse vs Exception 13 Years Ago by Momerath Addendum: Most of the time you won't have this great of an error rate (50%). But, you only need about 1 in a 1000 to have a parse error to make TryParse faster than a straight Parse/TryCatch. If you are 100% sure that there are going to be no parse errors, a straight Parse is about 80% faster. Re: Input string was not in a correct format. Tryparse not working 5 Years Ago by tinstaafl … radius = float.Parse(txtR.Text); float.TryParse(txtR.Text, out radius); float tribase= …float.Parse(txtB.Text); float.TryParse(txtB.Text, out tribase); float height =… float.Parse(txtH.Text); float.TryParse(txtH.Text, out height); looks very problematic… Input string was not in a correct format. Tryparse not working 5 Years Ago by vampz …EventArgs e) { float length = float.Parse(txtL.Text); float.TryParse(txtL.Text, out length); float width = float.Parse(txtW.Text…, out tribase); float height = float.Parse(txtH.Text); float.TryParse(txtH.Text, out height); float area = 0; switch(exp){… Re: Input string was not in a correct format. Tryparse not working 5 Years Ago by ddanbe …, height = 0.0; switch (geometry) { case Shape.Circle: if (double.TryParse(txtR.Text, out radius)) { area = Math.PI * radius * radius; txtResult… Re: Input string was not in a correct format. Tryparse not working 5 Years Ago by ddanbe … name btw) In your case only parse the textboxes needed. Tryparse works great when I use it, it even returns a… Validation using TryParse 15 Years Ago by 3Dees … console.readline? I am trying to validate and input using tryParse to ensure a doulbe is inputted if not display a… As Double 'Function required to validate input If Not Double.TryParse(txtbox1.Text, vDouble) Then ' MessageBox.Show("enter a double… Do While + Tryparse testing 9 Years Ago by Tigr@ ….Write(" <jaar 1582 - 2500>..."); } while(!int.TryParse(Console.ReadLine(), out jaar) && jaar < 1582); Why… a integeren in a do while when there's a tryparse apperently whats the best way of doing this? Thank you… Re: Do While + Tryparse testing 9 Years Ago by deceptikon > Why doesn't this work in C#? Because you should be using `||` in your loop rather than `&&`. With `&&`, `jaar` will only be compared to 1582 if `TryParse` fails, which is somewhat nonsensical. Re: TryParse as validation for float 12 Years Ago by Momerath [QUOTE=johnt68;1665692] I only get one error under the method name again [COLOR="red"]'TemperatureConvertorPractice.Form1.inputMethod()': not all code paths return a value.[/COLOR]:-/[/QUOTE] This would be an error in your inputMethod() code, not in the code you've posted. What it is telling you is that it is possible for the code to … Re: TryParse as validation for float 12 Years Ago by arunkumars you can do this, no problem with the code, and you dont have to clear the text box, just display an error message, let the user know why the error is occuring... Re: TryParse vs Exception 13 Years Ago by ddanbe Fantastic! Great snippet! Re: TryParse vs Exception 13 Years Ago by Rynkadink Very nice info. Thanks! Re: TryParse vs Exception 13 Years Ago by CsharpChico if (the value being passed == to code within the application) { this.methodGreat; } else { this.methodSucketh; } private double d; public double d2 {get{return d;}} What if the value being entered in a textbox has to be an double value? try { d = double.Parse(textBox1.text); this.DialgogResult = DialogResult.Ok; } catch { this.DialgoResult = … Re: Input string was not in a correct format. Tryparse not working 5 Years Ago by vampz thank you all of you i'll re-write the code keeping in view these thoughts thanks once again. Re: Validation using TryParse 15 Years Ago by waynespangler A double can be a 1 or a 1.2 or a .0034567. Just convert the entered number to a double. Re: Do While + Tryparse testing 9 Years Ago by Tigr@ Thank you for clearing this up. And I now see the flaws in my logic. I should've known this. Help with my basketball project 16 Years Ago by michellemonty …integers Static isconverted As Boolean isconverted = Integer.TryParse(Label37.Text, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, … NumberFormatInfo.CurrentInfo, awayplayershootingstat(3)) isconverted = Integer.TryParse(Label66.Text, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, awayplayershootingstat…