Databound Textbox Formatting And Calculations
Nov 19, 2010
All - I have a form that has two databound textboxes on it. To keep it simple, they are: Quantity & Value For BOTH of these text boxes, the TEXTCHANGED action will multiply the two and present the result in a LABEL. This works 100%.
[Code]...
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Sep 2, 2009
For BOTH of these text boxes, the TEXTCHANGED action will multiply the two and present the result in a LABEL.This works 100%.NOW - If I choose to add formatting to either of these text boxes, the calculation will not work. As one might guess, QUANTIY is formatted as NUMBERIC with zero decimal places and VALUE is formatted as CURRENCY with 2 decimal places.
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Mar 27, 2012
I have a databound textbox that I would like formatted as a phone number ((###) ###-####), instead of being displayed as 10 numbers.
I'm using this on a databound label, which works fine. The same doesn't work on a textbox, though.
phoneNumber = CDbl(lblPhoneNumber.Text)
lblPhoneNumber.Text = phoneNumber.ToString("(###) ###-####")
Anyone know of something that will work with a textbox?
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Dec 6, 2010
I have a datagridview which is bound to a table in a database. In said table, I have a field called Date and a field called Time, among other various fields. By default, I see that VB.NET attempts to help me by formatting the Date and Time columns for me, however I would like to do it my own way. I checked the columns' DefaultCellStyle fields and found them blank. Apparently, its current behavior is defined elsewhere. How would I go about removing the default formatting that VB.NET put in place to make room for my own?
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Aug 31, 2011
Normally I would create a form and handle the binding of controls myself. However, the current table I'm working on has 180 something columns so I decided to use the BindingSource to control the amount of code I have to write. This has all worked well until I try and call the value of one of the textboxes.
So.. I bind my form like so: Me.MyTableAdaptor.Fill(Me.MyDataSet.MyTable)
Whenever I call a textbox e.g.: Dim myVar as String = txtName.Text myVar remains "" or Nothing. I just can't get myVar to equal what is typed into the textbox that is databound.
Is there anything I can do. I know that binding isn't the recommended use, but I really could do without having to write the insert, select, and update commands for 180+ columns.
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Jan 2, 2012
I have some code where I am trying to use variables in a tabpage. The first tabpage only has one text box for user entry (miles.text) and a button to do a calculation: traveltime = mileage/speed. The value from miles.text is stored into a variable called mileage while the speed used is stored in a variable called speed (me.speedtextbox.text).
Ordinarily, doing val(variable.text) works like a charm and it's not doing it in this case. When the user enters 100 for the mileage, it should be divided by 65 (the number in the database) and, therefore, the answer should be 1.53 hours. In my case, I'm getting "infinity" and whenever I do anything else with the variable, I get "when casting from a number, the value must be a number less than infinity." But it is! It's only 65 and I double-checked that the dataset said that too, which it does. Not sure why I am getting this error.
[Code]...
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Apr 24, 2011
I am experiencing aproblem in my VB.NET App. The salary form is a databound form in my app to a linq data source. There are several text boxes to enter and calculate different salary fields. e.g. Basic Salary, Budgetary Allowance and Adjusted Basic Salary...
all the above three controls are bound to the datasource. now on the Leave events of the Basic Salary and Budgetary Allowance there is a function to calculate Adjusted basic salary.
The problem is i dont see the calculated amount in the adjusted basic salary but i see only the underlying data in the database instead of the programmatically calculated amount.
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Feb 21, 2011
It's being some years since i actually wrote a program in VB, last time was VB 6.So it's being a long time, and things have changed a bit.And i am still very rusty, so i need to get back into it.I got a few problems which i cant remember very well.1st question.I got several text boxes, in these text boxes there will be prices of products.The very last text box is inactive, and is supposed to show the total of all of the above.I have to declare the text boxes to contain numeric values only, so there will be no mistake when doing the calculations.But i cant remember what it was, and what the best option is to add up all the values from the text boxes.
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Dec 1, 2010
I got a pizza shop and the assingment is to create a application which allows the user to take a customer's order... I have a combo box filled with all of the items you can order (data from an access file)... and I need to have it so that when you select an item, it shows up in a text box below... I keep getting an error message saying you can't convert datarowview to string..
Here is some
Private Sub TakeOrders_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'PROJECT4DataSet.Items' table. You can move, or remove it, as needed.
Me.ItemsTableAdapter.Fill(Me.PROJECT4DataSet.Items)
[Code] .....
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Sep 14, 2009
How to date formating date in textbox, ex: when i fill the textbox 02/02/2009. it automatic change : 02/Feb/2009.
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Nov 29, 2011
I want to format several textboxes so that they would accept a decimal number like 2356.90. Now, let me first describe to you how I designed the designers view.. or rather I am going to attach what I did.
Ok... first the textbox SUM OF THE BILLS i would want to display two decimal point places.. so that when a person clicks the click for sum button, it calculates the sum of the bills and places it in the textbox. I got this code so far...
Code:
Private Sub txtJanuaryBillsSum_TextChanged(sender As System.Object, e As System.EventArgs) Handles txtJanuaryBillsSum.TextChanged
txtJanuaryBillsSum.Text = Format(Convert.ToDouble(txtJanuaryBillsSum.Text), "####.##")
[Code]....
Everything was fine and it was running ok but when i added the code for the format of the textbox I suddenly got that error.
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Feb 26, 2011
Example:
Format(781234.57,) 781235
Format(781234.57) 781234.6
Format(781234.576) 781234.58
[code]......
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Dec 10, 2009
I'm having trouble getting a numeric format out of a textbox.I can do this in the textbox validating event, but I need commas to be entered into the textbox as the user actually types the data, not after they leave the textbox.. the reason is that they are typing really large numbers and can easily lose track of 0's or the total number if there are no comma seperators.I tried to do this through the keydown event in the textbox, but that doesnt work the comma gets inserted but the cursor goes into the begining of the string so anything new i type goes ahead of the old stuff.is there really no formatting on the properties level of a textbox??? how can there be no datamask?
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May 28, 2010
I'm playing with a simple string replacement editor for editing VB.Net functions outside of VB. Is there a way to apply VB.Net code formatting to a string?
For example. The txtboxCodeEntry looks like this:
If strVar="dummy" then 1 else 0 Endif
I would like it to "autoformat" to:
If strVar = "dummy" Then
1
Else
0
End If
The formatting would match whatever formatting VB.Net does when you're editing code in the Visual Studio IDE.
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Aug 19, 2009
I am using VB express 2008.How can i format the border style of textbox like we have so many options in MsWord
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Jun 23, 2011
So I'm attempting to get three variable to print in a string, but I can't figure out how to make the Concat or Join commands to work properly. I've tried assigning the strings to a defined string variable and then "concatting" that and trying to do it in one big line. I keep getting an error either way. Here's what I have so far:
Str1 = PaymentNumInteger
Str2 = NewBalanceDecimal.ToString("C")
Str3 = MonthlyIntPayDecimal.ToString("C")
[code].....
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Feb 4, 2011
How to make the selected text in a RichTextBox Bold,italic,underline ,change its color to red, Font to "Lucida Sans Unicode" and Text size to 18pt.
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Feb 28, 2011
I am building an XML string programatically using the XmlWriter ...
sb = New StringBuilder()
writer = XmlWriter.Create(sb)
writer.WriteStartDocument()
[Code]......
I want to be able to output the XML to a TextBox control on a ASP.NET webform. When I do output the XML I don't get any line breaks or indentation in the XML. The XmlWriter does not seem to have any properties to set formatting. Is there anyway to retain formatting and indentation?
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Jun 20, 2010
I have been working on some code that prints a textbox that lists contact information. When I try to print it, it doesn't print out the tabs that I used to format the text. Here is my code:
Private Sub PrintPage(ByVal sender As Object, ByVal ev As PrintPageEventArgs) _
Handles prndoc.PrintPage
Dim fnt As Font = resultTextBox.Font
[code].....
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Oct 30, 2009
I've made a user control (http:url.....)I'm trying to format the text based on the data type e.g.:
Date
Numeric - 2 Decimals
Numeric - 0 Decimals
String
Now, I've added a property so that the user can decide at design time, what format he wants for the textbox. I've also made the options an enum. And then the coding in a sub. But not sure what I have to do with the sub.When I put it in the TextChanged event, then I get the weirdest behaviour from it.LIke when I typed in 1234 on Numeric0Decimals, after I typed 4, the cursor jumped to the first position of the textbox...On type Date, I just type in 2009/08 and then again it just jumps to the front and set the text to 01/08/2009 .So obviously can't place the sub in the textchanged event...
Private msTextConversion As TextConversionOptions
Enum TextConversionOptions
DateType[code]....
I'll obviously still change my sub to make sure that the text entered is numeric,or string, or valid date etc. Just didn't get around that part yet.
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Mar 28, 2011
I have a text box that displays a phone number. The data is coming from a database.Right now it just displays as "xxxxxxxxx". I'd like to display it as "xxx-xxx-xxxx" or even "(xxx) xxx-xxxx"Here's the code that I'm currently using to display the phone number - PhoneTextBox.DataBindings.Add("text", aBindingSource, "Phone")What can I add to this line to get some formatting?
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Jan 14, 2009
I have a DGV and a TextBox into my form. The TextBox displays the "DGV.rows.count" for example as "3" but i want to show me "00003". How can i format this textbox to display data like "000XX"?
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Oct 22, 2010
So I'm using a plain TextBox to display output from an ongoing background process. I've created a 'report string' that displays in my textbox like it has 3 columns; there's a VariableName, a VariableValue, and a VariableEffect (showing how applying that variable to the process affected it).In my textbox, any VariableValue entry that has 17 or greater characters gets 1 tabstop between Value and Effect; any entry 16 or less gets 2 tabstops, and any value 7 or less gets 3 tabstops which very neatly lines up the 3 columns.
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May 24, 2010
I am using vb.net 2003. In my program I access an Access database file via Jet 4.0 and OleDbDataAdapter.I have several tables constructed with text boxes that are filled with data using OleDbDataAdapter.Fill. This all works fine. When Integer data is displayed in the boxes it is shifted to the left as text. How do I format these textboxes when I am filling them with the Fill statement? I would like them numbers to be shifted to the right and have commas placed every third didgit.
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Jun 29, 2009
My user wants to have textbox fields that don't have any masks but wants those text fields to reformat any text that is entered as mm/dd if it is a real date entered
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Sep 12, 2011
In a textbox on my form, I have a value that loads in it that is something like "10.38 - 12.33"
I want it to where the textbox will display whole numbers only. So it will show "10 - 12"
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Dec 19, 2010
My user wants to have textbox fields that don't have any masks but wants those text fields to reformat any text that is entered as mm/dd if it is a real date entered. They won't be using the year.
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Apr 23, 2010
I have 3 rich textboxes on my form and I need to extract the data from box 1 and box 2 and put it into box 3 without losing the formatting (as you know richtext boxes can support colour and picture formatting that i currently have in box 1 and 2). I tried the following but it strips all the formatting from box 1 and box 2.
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Jun 12, 2011
As the title says I have a form with many databound textboxes. some of these boxes have data in them and some are empty. I need to add them altogether, so far all of the conversion methods I have tried err out when they run into an empty string, except Val, but then Val won't handle the string with a $ in it. I've tried decimal.parse which handles the $ but not the empty string. So I seem to be in circle that I can't get out of.
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Sep 30, 2010
I have some VB .NET software that interfaces to a load of old (but sound) COM objects. The VB provides a GUI for the COM objects, part of which consists of setting various options on the COM objects - several of which relate to string formatting.I have a simple pair of VB .NET functions that convert basic %f, %d, %g formats to/from .NET equivalents using a large select case covering specific common strings, but they don't cover all formats.[code]Before I start diving in and making it more versatile with some parsing, does anyone know of a class (eg VB or C# .NET) that provides a decent ready-made implementation? Or perhaps some regexp wizadry could be used?
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