VS 2010 Empty Textboxes Does Not Work
Nov 26, 2011I do not know why this does not work. Obviously, I made a mistake somewhere.
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VS 2010 If Any Of Textboxes Is Empty Receive A Msgbox
Sep 24, 2011i have 4 TextBoxes, TextBox1, TextBox2, TextBox3, TextBox4..When i press the button1 If any of them is blank, i want to get the message "You cannot leave any text field blank!" and do not execute the command from the other side, if the user has input text it should execute the commands..How can i do this, because if i had 1 text box it would be easy to make it now i have 4 and i don't know what to do!
View 3 RepliesCheck For Empty Dynamic TextBoxes?
Aug 8, 2011I have a code in Save Button, and part of it, a code that checks if the dynamic text boxes that has been created is empty. But when the system runs, it only check the first set of text box and an an message appears "Collection was Modified; enumareation operation may not execute.".
Here's the code:
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Try
For Each txt As TextBox In TextBoxes2
If String.IsNullOrEmpty(txt.Text) Then
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Check Numerous Textboxes As Empty?
Nov 6, 2011I have numerous textboxes which I use to gather data to be placed into an array. But I want to ensure, before I place them to the array,that there is at least one character (letter or number, no space) in each textbox. Seeing as I have about two dozen, it would seem tedious to write an If...Then statement for each of them. And I cannot use a custom textbox class for this. So how can this be done?
View 3 RepliesString.Empty - Clearing Both Labels And Textboxes
Nov 7, 2011When clearing input from users. What is the difference between clearing it in these two forms
txtExample.Clear()
versus
txtExample.Text = String.Empty
The only difference that I could find was that the labels aren't cleared with .Clear() (or at least from what I inferred from my book that's not possible). Is there a noticeable speed difference or should I just clear both labels and txt boxes with String.Empty
Can't Work Out Arrays For Textboxes And Labels?
Nov 12, 2010Okay, I've looked but I can't work out arrays for textboxes and labels. So, using 2 textboxes, how do I do the following in VB.Net?
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Get Code To Work To Populate Textboxes And Datagrids?
Feb 15, 2012I am creating a form application that should display information from one dataset into individual textboxes (ie. system name, system id, location name, location id). The textboxes populate upon the selection of a pair of cascading combo boxes. So, the user first selects a system name from the first combobox, then that selection will populate the second combo box for the locations of that system. (This means that each system may have more than one location.) Once the location is selected, each of the 4 textbox should populate with the corresponding data but I'm not quite sure how to write the code..
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Saved Data Through Textboxes / When Program Does Not Work
Oct 2, 2010can you write me code of data storage?for example: I want to saved the data through textboxes when the program does not work.
View 2 RepliesVS 2005 Add Multi Textboxes Resolve For Null - Conversion Cannot Work
Nov 6, 2009I need to add multiple textboxes together and am using Cdbl, my problem is if i have an empty box then conversion can not work, so i have to put zero default in each Textbox, i really dont like they way that looks So i am looking for a way to to give an empty textbox a value of zero so the conversion will work
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VS 2010 : How To Empty Datarepeater
Mar 10, 2011im trying to empty a datarepeater control because when the user selects the button twice it throws an error about double binding to the same control.i tried setting the datasouce to nothing and stating databindings.clear() but still didnt work?
View 1 RepliesVS 2010 Suppress Empty New Row At End Of Dgv?
Oct 15, 2011The data source is an Access 2003 table. I create the table in code and then populate it with 70 rows (each one empty apart from a date field). This unfortunately adds a 71st row (the placeholder for a new table row). Is there a way to stop this row appearing (I don't allow users to add rows anyway, only to edit existing ones, so this final empty row is just untidy and always empty).
Here is the code I use to create the 70 rows:
Conn.Open()
da.Fill(ds)
dsNewRow = ds.Tables(0).NewRow()
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VS 2010 - DateTimePicker - Empty Value Of Content
Aug 12, 2011My DateTimePickers are retaining their values from one added record to the next. How do I empty their Value contents after each record is saved?
View 5 RepliesVS 2010 Checking For Empty Field
Sep 1, 2011I have a field that I want to check to see if it has a value or not. But my code is not working. I am using:[code]
View 9 RepliesVS 2010 Testing For Empty EventArgs?
May 1, 2010I'm encountering a scenario where I need to see if e is "Empty" before I execute code (don't execute if it's Empty).In a routine similar to the following, I can see while debugging the code that "e" is empty, but I can't figure out how to test it in the
Private Sub RadioClick(ByVal sender As RadioButton, _
ByVal e As System.EventArgs) _
Handles Radio1.Click, Radio2.Click, Radio3.Click, Radio4.Click
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For some reason, I'm encountering situations where this event is being raised by clicking anywhere on the form. However, when this happens, e is Empty. If I can test for that, then my bug will go away, but I haven't been able to figure out the syntax.
VS 2010 Testing For Empty Fields?
Mar 14, 2011I used to run into problems with this in VB6, too...
If Not ds_Students.Tables(0).Rows(0).Item("ClassDay2").IsNullOrEmpty Then
txtClassDay2.Text = ds_Students.Tables(0).Rows(0).Item("ClassDay2")
End If
This produces "Public member 'IsNullOrEmpty' on type 'DBNull' not found."
And is there a different test for fields of different data types?
VS 2010 - Settings Occasionally Get Reset To Empty
Sep 13, 2010While writing an app that uses a couple settings, they occasionally get re-set to empty. I haven't seen any pattern to this, but I do have a vague memory that there are certain circumstances that will reset the settings in a project under development. What are the circumstances that cause the settings to be reset?
View 6 RepliesVS 2010 - Trim Empty HTML Whitespace
Aug 30, 2011I have a web application where the user uses an HTML editor to input some formatted text to show on the website. This text is stored, as HTML, in a database. It turns out now, after some time, that users are sometimes entering whitespace (newlines, spaces, etc) before and/or after the text they are entering, and this whitespace shows up in the rendered text on the page. Multiple sets of this text are displayed top to bottom, and due to this whitespace the separation between bits of text varies, which doesn't look very pretty. So, I've been asked to get rid of the whitespace automatically.
Seemed like an easy task at first, I'd just call Trim on the string. But that won't work, the 'whitespace' when rendered isn't actually whitespace at all, it's a bunch of <br /> or <br> or <br></br> tags, or spaces such as, even empty paragraphs <p></p> sometimes. So calling Trim won't help, I need to get rid of all the tags that would render as whitespace.
The HTML editor control I'm using may or may not have built in support for this, but it doesn't matter, the database is already full with texts that contain these newline tags, so the best option I can see is to simply trim this whitespace before displaying it on the page. [Code]
VS 2010 : Allow The Program To Exit While The Textbox Is Empty?
Feb 27, 2012how I can allow the program to exit while the textbox is empty but I can't figure out how it works really..it will not allow me to exit,enter, or tab out of the textbox while its empty.
Private Sub gradeTextBox_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles gradeTextBox.KeyPress
Select Case e.KeyChar
Case "0" To "9", vbBack, vbCr
e.Handled = False
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VS 2010 : Empty Dataset Conversion To Table?
Jan 13, 2012I inherited a program that retrieves 3 datasets from our vendors' web services, converts it to a table and then merges the 3 tables before exporting into xml from the resulting combined table. The problem I am having is that when web services returns an empty dataset the program crashes in the attempt to create a table from the empty dataset.How do I modify this code to either create an empty table or recognize the empty dataset and skip around that particular table creation, merge and removal? There is always data in at least one of the datasets.
foreach (Branch branch in branches)
{
Console.WriteLine("Opening connection...");
Vendor.ws_ordersSoapClient VendorClient = new VendorInterface.Vendor.ws_ordersSoapClient();
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VS 2010 : Error Message For Empty Listbox?
Jul 4, 2011i have 3 listboxes and a calculate button and a lblGrandTotalCost, the program works like this when i select an item from listbox 1 and listbox 2 then click "calculate" it shows a result in listbox 3, after repeating this rocess few times if u click the lblGrandtotalCost button it calculates the grand total of all the totals that are in listbox 3, Now i want the program to show an error message if some one click the lblcalculateGrandTotal button when listbox 3 has nothing in it or empty. how do i do that?
i wrote this code but it don't seem to work
If lstGrandTotalCost.Items = "" Then
MessageBox.Show("warning! theres nothing in listbox 3", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning)
VS 2010 Check DGV Cell For Null Or Empty Value?
Feb 29, 2012I have the following code that checks if the value in a cell contains a nummeric value.
Private Sub dgvOrderRegel_CellValidating(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellValidatingEventArgs) Handles dgvOrderRegel.CellValidating
Select Case e.ColumnIndex
Case 4 'Aantal
If Not IsNumeric(e.FormattedValue) Then
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VS 2010 Identifying If User Is Empty Or Pass
Jan 26, 2011What conditional statement is used to identify if username.text is empty or password.text is empty or both is empty then prompt a msgbox that tells what part is empty. My attempt was bad and my first time to use select case. [code]
View 9 RepliesVS 2010 Release Folder Empty After A Build
Dec 30, 2009I've searched the VS settings and haven't discovered why the bin.Release folder is empty after a build. The bin.Debug folder output is normal. The same occurs with the obj.* folder.
View 4 RepliesVS 2010 Remove Line From CSV When One Column Is Empty?
Jun 13, 2010Ok i have a weird issue. I cant figure out what to use... CSV has two colums :-Name, MobileJohn Doe,60002000Jane Doe,Now i would like to delete the whole line if mobile number is empty.. i cant figure out what to use. Mobile number are 8 digits long.
View 11 RepliesVS 2010 Stop A Timer When ListBox Empty?
Aug 1, 2011I have a ListBox with proxy and a webbrowser, the webbrowser has a timer for navigate to some urls. I want stop the timer when the listbox(proxy) is empty.Example:1-I got 10 proxy in a listbox and 20 Urls in other listbox: I want to stop the webbrowser when the last proxy was used.
View 3 RepliesVS 2010 Strings.Space VS String.Empty?
Jan 5, 2011To create a string of space characters to a given length using the MS VB namespace I used,
Strings.Space(Length)But without the VB namesapce, how do I do the same thing, is it like this?...
String.Empty.PadLeft(Length, " "c)
Enable Tab Out From Empty Texbox When Adding New Data In VB 2010?
Jan 27, 2012I am using visual studio 2010, service-based database. I created a simple table and created an edit form for that table. But when I save a row and then clear the text of a textbox (which holds a decimal value), it simply does not let me tab off the text box or save it. I put a ErrorProvider to see whats going on. It says "Input string was not in correct format". But I allowed this column to be null in my table. So how do I fix this error. And by the way, it does not happen for all text boxes.
View 3 RepliesVS 2010 : Checking For Empty Text Boxes Before Doing Calculations?
Sep 19, 2010I'm writing a program for my class, which pretty much is an energy cost calculator. It takes 4 inputs from 4 text boxes and multiplies them, and the result is the cost. Well, now I have to come up with a way to check for empty text boxes and display a prompt to enter a number. I've tried inserting multiple codes to display a prompt and to no avail nothing has worked, I also receive the error "when casting from a number, the value must be a number less than infinity" error.
View 3 RepliesExtension Method Doesn't Work [VB 2010 - VS 2010 RC]
Apr 20, 2010I have the following extension method. However, when I type "File." this method doesn't pop-up. What did I wrong?
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Visual Basic 2010 - Command To Ignore Textbox If Empty?
Feb 27, 2012I have a program that auto fills a section on a webpage, how can i tell this command to ignore the textbox if its empty? If i dont the software crashes because the following command needs the box filled in order to proceed.
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