I have a textbox and a copy button, when I publish the app and run it, it returns an error if there is nothing in the textbox. I know why its giving me the error, but is there a way to suppress the error? Make it copy nothing? I want to make my co-workers and my lifes a little easier.
Current Copy
Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
Clipboard.SetText(TextBox5.Text)
End Sub
How to apply textbox blank validation on button click inside gridview in javascript?I have a gridview that contains 2 textboxes and a save button in each row.I want to validate the textboxes on corresponding save button click.
how do i set my initial value for textbox as blank. I tried to I load my textbox a data coming from my database but what my problem is that I need to set my default value for textbox as blank because everytime I load the forms the textbox will be filled immediately with data. This is how I bind my textbox and combobox after loading from database.
read code below as soon as user lefts field blank he should get the mesage thats what i am creating but ofcorse this code creates a bug and i get that message once for first textbox then for second and this process continues till i stop the project app gets stucked between thease two textboxes?
Private Sub fname_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles fname.LostFocus If fname.Text = "" Then
I have a form that has mutiple buttons and textboxes. When the form is loaded, I want to set focus to a button as well as a textbox so when the person presses the Enter key the actions within that button must be processed.
I'm trying to make a notepad, but I can not get it to open files on start up.what i mean, example, I right click on a text file on my desktop and select open with and then my program(it opens the program with a blank textbox, it does not open the text file)I do not know the code for makin this come true
i'm just a begginer in using visual basic. i'm trying to add, subtract, multiply and divide two numbers. here is my code;[code]an error is occuring when i'm not putting any number on the textbox. now for the problem when i put a number to textbox1, and 0 to textbox2, there is also an error. It's because we can't divide a number to zero.
I have this code that is supposed to validate that the value a user enters into the textbox is a number and not blank, but it is displaying the error message even if the user enters a number.
Private Sub txtAnswer_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtAnswer.TextChanged If Not IsNumeric(txtAnswer.Text) And (txtAnswer.Text <> " ") Then MsgBox("Please enter a number! Try Again!") txtAnswer.Focus() Exit Sub End If End Sub
I just realized I already have another section that checks if the textbox is left blank, but I still need to check that it is numeric.
I'm using the ErrorProvider in VB.Net (2005) which is associated with a BindingSource that is bound to a custom object that I have created. This custom object contains a date field that has a "Date" data type that. I am using a "TextBox" to bind the date field in my form. My issue is, whenever the TextBox loses focus and is blank, "String not recognized as a valid DateTime" is displayed by the ErrorProvider and the focus can't be changed to any other control on the Form. It's good that the ErrorProvider validates entries on Date fields by default (I didn't set up my custom object to display this particular error for the date), but it should allow blank values. I want the user to be able to have a blank date with no error message displayed. How can this be done using a Date field bound to a TextBox?
I have a date field bound to a textbox. If I make any changes to the textbox, I get "stuck" in the field unless I put a valid date value. All I want to do is set the date textbox to blank and move on to the next field, but I can't. I am eternally "stuck" in the field unless I put a valid date value.
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I did several hours of research, but looks like there is really no solution to this problem... Is this true?
Basically I have textbox1 and I have button1. I want it so when I press button1 it chooses a random string from these 4 strings. "dubstep","metal","hardcore","rap" textbox1.text = "***doido:L"
with workpath being the original location and sessionspath being a string with the new location. True is the overwrite property.The file copies a blank file with the same name, but what i want (obviously) is to copy the file and the contents.ie how am i suppose to copy a file?If you're not living on the edge, you're taking up too much room?
Im trying to make it so when the user clicks it will copy its text to the user clipboard butttt the textbox is disabled. How would i make it so when the user clicks on it he/she can still copy it but not change the text inside?
I try to view a datagrid with one empty row in it when the form loads. The datagrid has to be bound to a datatable all the time.I get a NullReferenceException with the following
Dim dt As DataTable dt = CType(Me.grdDataGrid1.DataSource, DataTable) Dim newrow As DataRow = dt.NewRow() newrow(0) = 1100 dt.Rows.Add(newrow)
The error occurs on the line where dt.NewRow() is used.The problem occurs when the datatable (and the datagrid) is empty. If they have data, this works ok.What do I have to do to get this to work with empty datagrids?
I have an open file dialog that shows when a button is clicked. Last night it was working fine. This morning I am testing some code and when I click the button to open the dialog the entire form is blank accept the dropdown for filename and the ok and cancel buttons. What happened? I have tried deleting the dialog and the put it back but it still does the same thing.
I have a Listview1 controls on my Form. the controls has 1 column with more lines. First, I wanted these lines into separate columns, but the lines are not delimited, it means, it has 1 ":", and the others ",". So I could write it only in 1 line:
Dim filename As String = "filename.txt" ListView1.Items.Clear() Dim sr As New System.IO.StreamReader(filename)
[Code].....
The "channels" is an identifacation from other lines that I don't want in the listview. So I have the line, and I want it to examine, whether it contains a specified word. If yes, then this word should be displayed in a textbox.
I've got a chapter I'm supposed to be working through and cannot access the template for a blank solution. My instructions are as follows:From the "File" menu, select "New", select "Project", select "Other Project Types", select "Visual Studio Solutions", and select "Blank Solution."
I can see File, I then see "New Project", but not just "Project". I click on this and my only choices are : Windows Form Application WPF Application Console Application Class Library WPF Browser Application
I've tried searching the installed templates for "Blank Solution", "Solution", "New Solution" and have no results. I've looked around for a couple hours hoping for a way around this and no luck so far.
I use the following coding to replace a word in my textfile, would it be possible to add any coding that will remove all blank lines from the same text file? Dim EditMyFile As String = IO.Path.Combine("D:Test.txt") Dim inputFile = Regex.Replace(IO.File.ReadAllText(EditMyFile), "test", "test2") IO.File.WriteAllText(EditMyFile, inputFile)
I have tried the following but it doesnt work. Dim EditMyFile As String = IO.Path.Combine("D:Test.txt") Dim inputFile = Regex.Replace(IO.File.ReadAllText(EditMyFile), "test", "test2") IO.File.WriteAllText(EditMyFile, inputFile) Dim sText As String = File.ReadAllText("D:Test.txt") Dim sNewLines() As String = sText.Split(New Char() {ControlChars.Lf}, StringSplitOptions.RemoveEmptyEntries) File.WriteAllLines("D:Test.txt", sNewLines)
My Visual Basic .Net 2010 application reads data from an EXCEL spreadsheet which will be generated by my "customers". The responses to Alkis last year (23 July 2011) has been a big help and got me over a hump in my application. Now I am down to the last issue - how do I detect a blank cell? Valid data is numeric, starts at a fixed cell (A5 to be specific), and will be continuous until it ends with blank cells. While blank cells appear to print a "zero", when I try to use zero as an end criteria I get a 'System.InvalidCastException'. When I put in a specific end value (-1) in the last cell all works fine but that, of course, is an invitation to a user error.What is the difference between "Value" and "Value2" and where might I find documentation that explains the difference? [code]
I have an rdlc report that always produces the last page in blank. In this page, the header and the footer are printed but no data is shown (all data finishes in the previous page). I already checked and re-checked the horizontal and vertical printable areas and all the report definitions fit into these areas (if not, a blank page will be produced in between each page, I guess). If the report has one page, two pages are printed, if there are ten pages with data, eleven pages are printed
I have a notepad txt file that has two columns of data. Vb reads data having one blank space (this is in column one) but ignores any other data beyond two blank spaces. in addition to being able to read the second column, I want to store the data thats in the column 2 in a separate string.
