dim temporaryProduct as string Dim value, convertValue, finalValue As Double temporaryProduct = mathForm.valueBox.tostring ' I've tried with .text too If Double.TryParse (temporaryProduct, value) Then 'Convert to double convertValue = value Else MsgBox ("Tryparse error") Exit Sub End If. How to draw the following sphere with cylinder in it? With notification service activated I would even get an email and I'm really not interested in your reply. Dim thirtyEight = "38" Dim sixPointFour = "6.4" Then, the best way to parse those to a numeric type is, Double.Parse or Int32.Parse, you should keep your data typed until you want to display it to the user. last 0s after decimal point for "double" data I'm pretty sure one of them is empty. If it returns false then parsing was not successful, and you should show an error message (using MessageBox if you desire) and abort the operation. Conversions Between Strings and Other Types - Visual Basic For example: Dim obj As Object obj = "4/1/2010" Dim dt As DateTime = CType(obj, DateTime) Which you'll have to use if Option Strict On is in effect. Converting std::__cxx11::string to std::string. vb.net - Converting Double to String with desired decimal How do I convert textBox to int and I'm working on a vb.net application which imports from an Excel spreadsheet. Were sorry. How to take large amounts of money away from the party without causing player resentment? Does the EMF of a battery change with time? Convert.ToDouble calls the Parse (or TryParse) method internally so that would work as well. Convert vb vb .NET provides extensive formatting support, which is described in greater detail in the following formatting topics: For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings. string I know this and I wrote this already, if you want to reply to the OP then use the part reply of the OP to answer. Use the TryParse method to do the parsing to avoid getting an exception if the parsing fails: Dim value As Double I found this else where, it provides the full functionality of VBScript, and its not an external library. From the docs "As a rule, you should use the Visual Basic type conversion functions in preference to the .NET Framework methods"" The Visual Basic functions are designed for optimal interaction with Visual Basic code" There is a separate note concerning localization so in this situation you are correct but I don't see why you reject, Sorry but I think that these methods are too babysitting me. What are the implications of constexpr floating-point math? Better than ToString function. Microsoft makes no warranties, express or implied, with respect to the information provided here. http://regexlib.com/CheatSheet.aspx?AspxAutoDetectCookieSupport=1 Converting Sign in to vote. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Here are two different ways you could do it: Using the Format Function ( link to MSDN Documentation) Format (laborCostpRun,"Currency") Using ToString with a Specified Format ( link to MSDN Documentation) laborCostpRun.ToString ("c") Both methods offer too many formatting options to spell them all out here. 6. This happens because in your locale the separator for decimal numbers is probably not a point but something else (usually a comma). CDbl () allows commas as the thousands separator in strings where Val () does not. vb vb Be aware that you should always add a value to the parameters and therefore if it is not numeric you would cancel the the command operation. i.e. Convert I think this should work (converted the Euclidean method above from .NET to VB6 (which should be close enough to VBA for you). When converting to string, I get this: value.tostring () VB How to cast the size_t to double or int C++, How to get absolute value from double - c-language, Formatting a double to two decimal places. Convert Textbox string to Double VB The ToString(IFormatProvider) method formats a Double value in the default ("G", or general) format of a specified culture. Convert string to double (VB.net) <%@ page language= "vb" runat= "server" %>