VS 2008 Error Proof A Combobox?
Jan 28, 2011
I was wondering if or how I could error proof a combobox.example: "If combobox1.text = (something that i dont have added into the combobox for the user already) then msgbox "Error: Use the items already in there" "but i didnt want to go through everything lieif combobox1.text = 1 then errorif it = 2 then error, if it = A then error.
View 2 Replies
ADVERTISEMENT
Jul 3, 2011
I have a small scripting engine written which can run basic code. I want that if the user protects the code, then it no one should be able to open the code except my program. Now I found a link : [URL] which encrypts the code using base 64 encoding. It uses a key to encrypt and decrypt.
[Code]...
View 1 Replies
Feb 23, 2009
My program is almost done now and I'm about a week from releasing it, but I want to make sure no one cracks it!
I guess I need some way of adding serials or something and also making sure two serials aren't being used on different ip's.To use my program you have to be connected to the internet, if not it won't do you any good anyway, so it's no problem if it closes if it can't get a connection from a website or anything
View 16 Replies
Aug 29, 2010
I have made an application in vb.net of which I want to make a trial version. It should stop working after a week. Is the ClickOnce manifests used for that? Any best approach for this. Preferably a process that does NOT use system date.
View 5 Replies
Aug 11, 2010
Private Sub Timer3_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer3.Tick
Timer3.Interval = (ComboBox2.Text)
[code].....
View 4 Replies
May 17, 2012
Administrator Console I am Making a Noob-Proof GUI Administration Control Panel,and I Have,Log Off User Shutdown (With User Selected Amount Of Time)Quick Shutdown (Shell ("shutdown -s -t 00") )Reboot Computer and I Need the following:
-Disable TaskManager
-Disable Command Prompt
-Disable internet
-Disable My Computer
-Disable Regedit
View 2 Replies
Jul 20, 2010
I am using a background worker's work method to create a new form and show it.
But it throws this error
System.Threading.ThreadStateException was unhandled by user code
Message="Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it."
[Code]....
View 2 Replies
Feb 22, 2010
Trying to build a small array to fill a combobox, when I type my code I have no errors in the error list, but when i go to compile/run/debug I get:
Dim arrayDC(2, 2) As Array
Public Sub buildarrayDC()
Me.arrayDC.SetValue("Item1", 0, 0) InvalidCastException was unhandled
[Code]....
View 12 Replies
Jan 12, 2010
i use this to populate my datagridview:
[Code]...
to replace this default dialog please handle dataerror event and the combos value then changes to the id of the job i select
View 1 Replies
Feb 10, 2009
I am using .net 2008. I have placed a ComboBox on the form and I do not have an additem.
[Code]...
View 2 Replies
May 13, 2009
I have completed my project and i have one remaining thing to settle... I want to make the combobox not to be able to write yourself. for example there are 4 options ,"A","b", "c","d".If i type w in the combo all the project is ruined!i want not to be able to type at all to prevent this...Which property should i change?
View 5 Replies
Oct 9, 2009
How to add item in combobox when combobox has a set datasource property?
those combobox is datasource enable.. when it display data from the database but when i add new item i want to those data from datasource is clear and add new items for selection and those are in bold line but it start process to add those item it gives me error "Items collection cannot be modified when the DataSource property is set."
how could i add item to a combobox with an enable datasource property[code]...
View 1 Replies
Dec 30, 2010
Protected WithEvents quarters As New ComboBox
Private Sub addperiods()
Dim quarterlist As New ArrayList
quarterlist.Add("1st")
[code]....
this causes a outofrange error. How? I added the arraylist into the combobox, I want it to select the first item.
View 1 Replies
Jun 5, 2011
Imports System.Data.SqlClient
Imports System.Data.SqlClient.SqlDataReader
Imports System.Data.SqlClient.SqlConnection
[CODE]...
Error throwing at lines :
txtb2.DataBindings.Add("text", view, "c_name")
txtb3.DataBindings.Add("text", view, "c_add")
txtb4.DataBindings.Add("text", view, "c_phno1")
View 1 Replies
Sep 2, 2011
I have the following code to populate a combobox[code]...
View 2 Replies
Feb 9, 2012
I'm trying to add three comboboxes DAY, MONTH, YEAR to the student database column DOB.I'm using the
newStudentClass.dob = CType(comboDobYear.SelectedItem & "-" & comboDobMonth.SelectedValue & "-" & comboDobDay.SelectedItem, Date)
newStudentClass.dob is a function that adds the student DOB to the SQL student database.
[code]....
View 1 Replies
Mar 10, 2009
I tried all the properties of the combobox to try if i am able to ONLY allow user to choose one of the collection in the combobox .Maybe by onli allowing to choose but not able user to type into combobox.Or even showing error msg to tell user to only choose the collections..
View 4 Replies
Oct 21, 2009
Okay so i have set up a database connection and got my combo box to fill from my table but it only fills with the first 4 records even though there are 5. There will be even more records depending on how many bookings are made so i need it to fill with all the records [code]...
View 3 Replies
Mar 3, 2012
When i select an item in my combobox it raises the following errorColumn 'field1, field2' is constrained to be unique. Value 'test1, 1' is already present.The combobox is bound to the table to populate it with values from field1 witch is the first part of primary key of the table. (field2 is secont part of primary key).
View 1 Replies
Sep 30, 2009
I am facing prblm in selecting compbobox...I have a 2 combobox...cboxSelunits and cboxseldept
In selected index change of Cbxunit i am filling CbxDept.and in selected index change of cboxseldept i need to populate the treeview
[Code]...
View 3 Replies
Aug 30, 2011
When i use the option strict on my combobox will be error this is my
[code]...
View 3 Replies
Jun 30, 2011
I actually have three combobox bind to diffrent table. and I got such the error in my title. Bellow are my codes:
myCommand = New SqlCommand("SELECT (FirstName +' '+ LastName) AS FullName FROM tblVisitor", myConnection)
myAdapter = New SqlDataAdapter(myCommand)
[Code].....
Through this code, i got only the first comboboxthat display the query result, but the other two do not, and display the message 'Cannot bind to the new value member. Parameter name: value'.
View 2 Replies
Aug 4, 2009
There is a connection in my program to SQL Server and there is a query which is bound to a combo box, to pull out values from the database. For some reason, I get an error message during run-time, saying that the syntax is incorrect.
Here's the query:
'The SQL Command to be executed:
projs = New SqlCommand("use " & Me.ComboBox1.Text & "''" & _
"go" & _
"select name from projects where condition = 'Y'", cnn1)
cnn1 is the name of my SQL Client connection.
View 3 Replies
Feb 9, 2009
I am using a DataBindingSource to connect a DataTable to a DataGridView. Everything was working fine until I added a ComboBoxColumn
Dim ReasonColumnIndex As Integer = dgvData.Columns("Reason").Index
Dim ReasonCombo As New DataGridViewComboBoxColumn
With ReasonCombo
.Name = "Reason"
.Items.Add("BREAK")
[Code]...
View 6 Replies
Mar 8, 2012
I have data codes in the format abcd123, abcd345,... present in the table Info of database.I want to drop abcd from code and display remaining code in a combobox of datagridview.
Code:
Dim dsCodeList As New DataSet
Dim dtCodeList As New DataTable
[code]....
It is giving error at first statement inside for loop saying Column Code Does not belong to Table Info.If i write simple query without use of right function and use dtCodeList.Rows(i).Item("Code").substring() to ignore first 5 characters, it works well.
View 4 Replies
Oct 5, 2009
I am using combobox to populate values from a table, 'Suppliers'. I put this combobox in a form wherein the order details are filled up. This column 'Supplier' is a Foreign Key and set to NotNull in the order detail table. Selecting the first available entry on the combobox gives error 'SupplierID cant be Null' . Selecting the 2nd value is OK, first choosing 2nd and coming back to 1 is also OK. This error comes up when trying to update the database.Even with the first value, the combobox is having a text. I would like to know why the error.
View 5 Replies
May 5, 2012
I'm trying to fill a ComboBox with values from a column in a database...I'm trying to use code I found in jmcilhinney's CodeBank post at url. credits to him since it's basically 100% his code in my image below.I've tried 4 methods before this, and I've been receiving the same error, so it must be my fault... the image below shows the code and the problem.
View 1 Replies
Apr 27, 2012
I'm trying to populate a combobox from another combobox
There are two comboboxes involve:
1. comboSupplierID
2. comboSProducts
[code].....
View 6 Replies
Jul 13, 2010
the next issue, that is only shown when the server is a Windows server 2008 machine , this is the information that I've found
[Code]...
View 2 Replies
Aug 10, 2009
I imported an app from vb6 to vb.net It works fine. It has one axmsflexgrid control. Now I want to add another axmsflexgrid control in the same app. I tried to copy and paste from one frame (groupbox) to another and got this error:
"An error occurred while processing this command: Exception from HRESULT:0x800A018A (CTL_E_GETNOTSUPPORTED)"
An inputs on how would I fix this? Or just make a new axmsflexgrid?
View 18 Replies