Error String Showing Twice In ErrorProvider?
Jul 14, 2009
I'm having troubles with my errorprovider and i already found out what the problem is - the textbox is bounded twice (Display Member and Value have different binding sources) and so the errorprovider is showing the same error twice. If i remove one binding source,everything is fine.Any suggestions?Oh - I'm validating the columns in my DataSet.vb with DataTable_ColumnChanged Sub with table.setColumnError().Another problem ->I have a field (decimal) in my dataset that is optional (can be null). But if the user writes something in and then deletes it so that the textbox is empty, the errorprovider is showing the error "Input string was not in a correct format."
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Oct 10, 2011
What is the difference between ErrorProvider.Clear() and ErrorProvider.SetError(tBox,vbNullString)
Is there a preference for one or the other?
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Mar 20, 2010
Is there any way to turn the damned error provider off when i try to close the form using the windows close button(X). It fires the validation and the user has to fill all the fields before he can close the form..this will be a usability issue because many tend to close the form using the (X) button. i have placed a button for cancel with causes validation to false and it also fires a validation.
[Code]...
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Apr 19, 2012
I would like to ask how to clear the ErrorProvider in VB.net 2003? ErrorProvider.Clear() isn't working in vb2003. i know it's very simple
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Nov 13, 2009
I have put my business logic in a partial class as suggested in best practices. One of the conditions is that one of four fields of a row has have a value. Setting the errorprovider has no problems when creating a new row in the new row event. All the textboxes in the form show the error condition.
Dim ErrorString As String = "A value is needed for at least one of the " & vbCrLf & "Gallon, Fuel, Oil, or Misc fields"
e.Row.SetColumnError("Gallons", ErrorString)[code]....
The logic that sets them back to a no error condition though only sets the currently focused control in the form to no error. When the error is corrected.
MyFuelRow.SetColumnError("Gallons", "")
MyFuelRow.SetColumnError("FuelCost", "")[code]....
How can you reset multiple column errors at once?
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Aug 27, 2010
How can I reference the errorprovider on another form from a module.
Sample Code:
Sub
leaveOptionalTBTextValidation(ByRef TBControl
As custTextBoxControl,
ByRef intMaxChars
[Code].....
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May 6, 2011
I am adding a handler on each form to validate all textboxes for empty strings.
I have a class that has a procedure for validation
Sub NonEmptyValidate(sender as Object, e as System.ComponentModel.CancelEventArgs)
dim _errorProvider as ErrorProvider
dim _txtBox as TextBox
[Code].....
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Nov 12, 2009
I'm having an issue with getting the errorprovider to work in a database application where I have put the error provider logic in a partial class and have a combobox value change.Either I set the bindings so that it works but any navigation in the binding navigator then updates the value of that combobox on every next previous etc or it never fires until the save. So there is no way to change the errorprovider setcolumnerror string to something new with out saving on every navigation move. After changing the selection in the combobox the row does shows dirty (rowstatus) so there is databinding but it doesn't fire the ColumnChanged event like textbox and other controls. Is there a way to keep all this in the business logic in a partial class?
Partial Class reportexecDataSet
Partial Class fuellogDataTable
Private Sub fuellogDataTable_ColumnChanged(ByVal sender As Object, ByVal e As
[code].....
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Feb 13, 2012
I have an ErrorProvider on a form with a DataGridView.The Binding Source for the DGV points at a single table in the DataSet (which hooks up to an underlying Access DB).The table has two columns:
1) Autoincrement PK
2) Text field, <=25 chars, unique, can't be Null or empty string
I test for string length (>0 and <=25) in the DataSet.Table.RowChanging event.If it's out of range then I use e.Row.SetColumnError, that passes the error to the ErrorProvider / DGV on the correct row and DataSet.HasErrors returns True. All good, no problems.
I test for uniqueness in the DataSet.Table.ColumnChanging event.If it's not unique I can set the error with either e.Row.SetColumnError or e.Row.RowError; Now it gets complicated since sometime this makes the ErrorProvider / DGV show the error and sometimes not, it depends on whether the DataSet keeps the Unique = True constraint of the underlying DB.
Why would I have the DataSet be False for Unique when the DB is True for same constraint? So that the user interaction with the form has the minimum of dialogue box based interuptions. I am trying to design a system whereby all issues / errors are reported
to the user as they interact with the form in a subtle way, allowing them to keep working but trapping errors before any attempt to Save from the DataSet to the DB.
So, if the DataSet keeps the unique constraint then when you insert the new (duplicate) row the DGV throws its DataError event, a default dialogue appears, behind which the DGV has the ErrorProvider icon on the correct row. However, since the DataError event
causes the problematic change to be rolled back, the new row is removed and the error disappears.
If I change the DataSet requirement to Unique = False, then SetColumnError does not cause an ErrorProvider icon to be shown and DataSet.HasErrors returns False. I can improve upon this slightly by using RowError, this causes DataSet.HasErrors to return True but the ErrorProvider icon still does not show.Further, when using Unique = True on the DataSet, and editing an existing row to be a duplicate of another, the behaviour is the same, DGV.DataError event, roll back of the change but the ErrorProvider icon remains, despite the row no longer being a duplicate and DataSet.HasErrors returns True. The text of the the ErrorProvider tooltip is the one from SetColumnError, not RowError.So, the behaviour of SetColumnError is affected by the state of the DataSet field Unique constraint?
Unique = True
SetColumnError affects the DGV / ErrorProvider and DataSet as expected.
(RowError behaviour unknown)
Unique = False
[code]....
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Dec 31, 2009
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?
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Dec 26, 2011
The idea is simple, if I have a string value "ABCD" then with a ButtonClick event it should randomly reveal a char while others are hidden. i.e, "B*" another click would "AB**" and so on. So far, my I have been stuck in a for loop.
[Code]...
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Apr 15, 2012
henever I attempt to open a form, an error has been popping up;
An error occurred creating the form. See Exception.InnerException for details. The error is: Index was outside the bounds of the array.
For simple code like;
formbooking.show()
Whenever I reference this form in anyway, that error pops up. I haven't done anything related to that form recently and I don't know what the problem is.
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Feb 6, 2012
how the various elements that help you handle errors work together. Have tried several options and can't make head nor tail of it. The underlying table has two columns, an autoincrement integer and a text column with the following settings:
[Code]...
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Jul 23, 2010
We would like to have 2 ErrorProviders for a DataGridView. The standard ErrorProvider and another WarningProvider with a different icon. Also is it possible to Left Justify the standard ErrorProvider icon in specific DataGridView cells?
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Dec 20, 2009
I get the following exception when showing a form: InvalidOperationException was unhandled
Mixed mode assembly is build against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.
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Jul 10, 2011
[code] when i try to add date into db >> is showing me that error ( Syntax error (missing operator) in query expression '10/07/2011 07:45: )
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Jun 23, 2009
I am checking emailId exists in DB, If ExistsI am looking to create a Ok/Cancel confirmation dialog.if user say "Ok" I am redirecting to some other form.[code]...
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Nov 27, 2011
How can i redirect the webbrowser1 if the webbrowser showing error NOT FOUND 404?
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Nov 28, 2009
I have 3 forms 1 -mainform which loads when program is open, and where you select the datafile you want to use and input default information in about 20 textboxes 2 butons 1 to each page 2 -has 3 comboboxes and about 20 textboxes worth of information pulled from the database. then 20 textboxes the user can enter values to compare against the default values coming from form1. and 20 boxes that have calculation results 2 buttons one to each page 3 -same as form2
I created a textbox font format function in form 3
When I load program and click button for form3 everything works fine, i can then click button to take me to form2 and vice versa back and forth no problem
When I load program and click button to form2 I get a date casting error from the function on form 3
Why would I even get this if i havent shown form3 yet??
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Jan 12, 2011
I got a string array & I need to show the contents of it to a single label. It acts like a clock. The thing is I tried with everything I could but I failed. This is the code I've been trying. Its in vb.net. And theres a thread running to slow down the loop so I can display the contents in a label for 2 seconds.
Dim j As Integer
For j = 0 To readText.Length
label.text=readText(j)
Thread.Sleep(2000)
Next
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Jun 29, 2010
The type for variable 'cri' will not be inferred because it is bound to a field in an enclosing scope. Either change the name of 'cri', of use the fully qualified name (for example, 'Me.cri' or 'MyBase.cri')I have created a class file with name Predefined which consists of this methods like cricket,BasketBall from this methos im returning List of string typeim calling that class in button click i As Integer = 0 To cric.Count - 1
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Jul 30, 2009
this is the code
Dim con As New OleDb.OleDbConnection
Dim com2 As New OleDbCommand
Dim constring As String = ConfigurationManager.ConnectionStrings("esourcecon").ConnectionString
con = New OleDbConnection(constring)
com2 = New OleDbCommand("UPDATE Customer SET CName = @CName, CAdd= @CAdd, CTel= @CTel, Cmob= @CMob WHERE CName='" & C1.Text & "' ", con)
[Code]...
id is an autonumber field and if i change the where string to another column then also i dont get any error and the values are still not entered
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Apr 1, 2009
I am working on implementing cell level error indication in my app and I have it set up to where it shows the error icon correctly and I tried using the datagridview FAQ sample code to show an errortooltip as well. I can watch as I set the errortooltip to have the proper data and display control (in mousemove event), yet the second I finish my mousemove event it fires the mouseleave event and resets my tooltip before the user ever has a chance to see it.
Here's my:
' show and hide the tooltip for error
Private Sub ChuteSinglesDataGridView_CellMouseMove(ByVal sender As Object, ByVal e As DataGridViewCellMouseEventArgs) Handles ChuteSinglesDataGridView.CellMouseMove
If cellInError.X = e.ColumnIndex AndAlso cellInError.Y = e.RowIndex Then
Dim cell As DataGridViewCell = ChuteSinglesDataGridView(e.ColumnIndex, e.RowIndex)
[Code] .....
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Dec 5, 2011
Public Class Form1
Private Sub PictureBox7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox7.Click
End Sub
Private Sub ShowDigit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowDigit.Click
[Code] .....
How would I finish off the code in ShowDigit3 so it shows the correct picture image for any number 0-9 in TenSecs??
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Mar 11, 2010
my code is :
[Code]...
The error is Value of type '1-dimensional array of string' cannot be converted to 'String'.
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Oct 14, 2011
I am working on RSS feed. In Rssfeed <description> (string) tag suggest using approximately 300 characters and then showing continuation with [...] after a word break.
<description>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially [...]</description>
[Code]...
How we can do with a string by showing continuation with [...] after a word break?
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Dec 26, 2008
I am using Visual Basic 2008, and SQL Server 2005. I have a single-user client-server app (i know that sounds stupid, but its for future expandibility and also the fact that documentation was easier to find for SQL server than Access files).The app is basically a medicals records system.
In one of the tables, called 'visits', it stores the dates on which each patient visits the doctor, among other things like symptoms and diagnosis. Another table stores all the patient names and IDs along with other details, and a relation has been set up between the patient ID in the patients table and the visits table. So i dragged the visits table from within the patients table (to get only the visits for that particular patient), and dragged it onto the form to make a datagridview. However, the datagridview didn't seem to recognise MS SQL server's smalldatetime format, and tried representing it as a picture. When i changed the format of the column to text boxes, it gave me a type mismatch error (Inconvertible type mismatch between SourceColumn 'VisitDate' of DateTime and the DataColumn 'VisitDate' of Byte[].) That means, for some reason, it is trying to convert the smalldatetime data to byte before it shows it, which is leading to the error. How do i fix this?
Also, I remember seeing some option for using completely custom column types in the datagridview, but i cant seem to find it now. The options in 'Edit Columns' are very limited, but i would like to set it to a masked text box, or something with a fixed format. Can someone recommend a good column type for representing dates, and how to make the datagridview show that kinda column?
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Mar 31, 2011
I have a problem with the combox its only displaying the first item in the list its being populated by a webserice call the drop down in question is comboboxmodel now the manufacture one is fine and sets as it should any reason as to why the comboboxmodel would not. [code]
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Jan 17, 2010
I don't understand why the line final.join etc pops up with these errors!! Value of type 'String' cannot be converted to '1-dimensional array of String' And Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated This is my code.
[Code]...
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Jan 15, 2010
I need to do this to every line in a file and save the # five Element in an array. I keep getting (error code 1 Value of type '1-dimensional array of String' cannot be converted to 'String'.)
NOTE: if I change ( Dim Lineoftext(1) to Dim Lineoftextt works) (It does't seem to work with arrays)
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[CODE]....
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