I have 2 project (A and B). A is the main, B its child.I added the B referencie in A to use its forms.When i run B, there is no error.When i run A, i can launch B, but in B all my Controls are Nothing
For example : B.frmMain.btnTest.Text is Nothing in B.DialogBoxTest when B is used in a referency, otherwise different of Nothing.I use Visual Basic 2008.
I'm just starting out using vb.net and i am writing my first application. I have added some comboboxes at runtime to my form using the code below.[code]Now my question is now that i have these controls added to the form, how can i iterate through them all and collect the values for sql injection. I have given each combobox a specific name when it was created such as Ball1, Ball2, Ball3.[code]
View 4 Replies1. What determines that some controls cannot be added to the form? (I tried several, not all of them)
2. Where does the image for Column 1 About form come from?
I have created a datagrid of my own in vb dotnet and converted to dll. I add this dll to a project.i have 2 forms and i have added this control on 2 forms. When i run the project and open 2 forms simentaneously an error " reference not set to an instance of an object" occurs on acess of any property of that control.
View 3 RepliesMy background is mostly Access VBA and I am having to learn VB.NET. I am trying to recreate an Access 2007 application I wrote into VB.Net. We are looking at using a hosted SQL Server so we do not have to worry about remote offices or replication. I am using VS 2008 and SS2008.My issue is that I need to create a login form in VB that with look at SQL Server DB and return a dataset record matching the username and password. There are many tutorials on here but do not match what I am looking for.I have a stored procedure with 2 parameters (@prmUser and @prmPassword) named spLogin.I need to call the sp and pass the parameters to SQL Server DB and return the complete row of data that is matched from the button_click event on my form.
In Access, I would have a form that would have the returned data and I would reference that information throughout the application by using the 'forms!frmName!txtValue' to populate forms, reports, and fields that would capture the user that created the record. What is the best practice for this?Next when the login credentials are correct then I need another form to open, which is my MDI form, if not correct then msgbox to try again.
I had a number of userControls added to a tableLayout, what I want to do is dispose of all userControls however if I use the following code it only seems to dispose of the first userControl and not the rest:
For Each myControl As userDisplaySet In Me.tableDisplaySet.Controls
' Closes control
myControl.Dispose()
Next
I have been working on a project which is used by a company's sale team, to combine all the wanted input data in one place allowing the sales team to show customers, where switching to them could save them money.
Basically what i want is a program which can save single records, which can hold data added in other text boxes, or indeed take the data from the list view boxes which is the intended output. I want to be able to save that data, then be able to Open it up again at a later date, and even modify it.
enabled me to save the three ways to identify a single record, the index number, company name and the date it was added. However I now need a way to save the data entered in my other forms to these single records.
I have a program that adds controls on the fly to an auto-scroll panel. When the panel is scrolled (viewing the bottom of the panel for example) and a control is added, it looks like it is added assuming the top left corner of the panel is still at 0,0 when in fact it may be 0,500. To see what I am talking about, create an empty "Windows Forms Application" project and insert the below code into it.
Friend WithEvents Panel1 As System.Windows.Forms.Panel
Friend WithEvents btnAdd As System.Windows.Forms.Button
Dim ButtonCount As Integer
[code]......
i have multiple forms in a project and all have statusbar. there is no way to add textbox on status bar but in my previous thread i got the help to add the text box. i created a function in module so that i call that function from all the forms on load and add the textbox on status bar and also add the event on textchange. the function to be called on event change is in individual form (at present)[code]
View 11 RepliesI have a datatable property called prpParametersTable in a class called clsBatch. I have a procedure that sets a datatable variable called dtP equal to prpParametersTable at the beginning of the procedure. I then add three new columns to dtP.Here is my problem. When I add the three new columns to dtP my original table prpParametersTable also gets those columns added to it, why? I only want to add the three columns to dtP and not prpParametersTable. How can I do that?
Private Function prvfnc_InsertBatchParameters(ByRef cnn As SqlConnection, ByRef trans As SqlTransaction) As String
' set new columns that have BatchID, Insert DateTime, and UserID for the SQLBulkCopy method below
Dim clm As DataColumn
Dim dtP As DataTable = clsBatch.prpParametersTable
[code]....
so i made a from with in it a WebBrowser now i added a Toolstripmenu and added some text in the toolstripmenu how can i make it that when i click in the toolstrip menu to go to an web browser
Private Sub World30ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles World30ToolStripMenuItem.Click
End Sub
i thought it was something like call webbrowser but it didnt work out
i am sending an url in the email i send like below
http://localhost/project/ForEmail.aspx?requestId=" + requestId
and wen i go to email and see it is totally different like below
http://localhost/cahs2/ForEmail.aspx?requestId=3D 248
why is 3D getting added when i am sending the url is right but when i see email and try to click that url is different?
So I am adding a new row to the datatable, then update but if I query the datatable it is not there. What am I doing wrong?
SQLInsert.Parameters.AddWithValue("@Name", Replace(ImportView(i)("Routine"), "'", "`"))
'connection.Open()
SQLInsert.ExecuteNonQuery()
[Code]....
Using VB2008 Express Data is from Access 2003 Goal to inster a yes/no message box when user selects the delete command.I have added the yes/no message box fine. When I select the yes to confirm the change it deletes it fine. The issue is when i select the "nos" option it still deletes it. The code below is what i have. I have tried an if/then statement with no success.[code]
View 4 RepliesOn the login page I made, this is part of the code behind for the submit button.
Dim aCookie As New HttpCookie("userInfo")
aCookie.Values("user") = Me.usr.Text
aCookie.Values("last") = Now.ToString()
[Code]....
For some reason, when it gets to the last line, it throws an error:
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
So I have this page as such:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="ViewContacts.aspx.vb" Inherits="ViewContacts" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
[code]....
and the commands are not being added to the buttons to add, edit or delete contacts....
I have added a button in datarepeater. If clicked once, it executes code and Button.text should change to Yes. Clicked again, it executes the opposite code and button.text should change to No. Codes are being executed (I am using flag variable) but Button.text is not changing.
How to change this text. I am simply trying Button.text="Yes" but probably I need to give some reference of the row no. too. How to do it?
I am trying to create a Form that can be filled out in it's entirety without having to bring up other forms. It is considered in access to be a subform. I have one table that includes Injuries and each injury has a specific ID well I have all the information that goes with it updating, except for the "many-to-many relationships"...I one want injury to have more than one treatment type, the problem occurs when I drag the injury table over from my dataset it automatically creates a binding source for it, which only controls the data inside that table. It does not control the data that is related to it such as "treatment type" "body part injured" . There must be a way to have a single Inj
View 5 RepliesI have added m.wav as a resource file & now want it to play onstartup?
View 1 RepliesI have written a program in VB6 which i have subsequently put into a dll so i can write a VB.Net front end.I have added the dll to the .net project and tried calling it but it is throwing up a security exception.Imports Sbank_Dll_v2
Class Page1 Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
[Code]...
Basically i have a question how going to added the new private function as highlighted ?
View 14 RepliesI recently added three subroutines to a form, and as a result of adding only the three subroutines, I have noticed some weird behavior in the form and I can't pin down why these three subroutines would cause it.
View 16 RepliesPublic Enum ERight
ECanInvite = 0
ECanCreate = 1
ECanDelete = 2
etc...
[CODE]......................
This below sub, on rights.add, sometimes throws this error: An item with the same key has already been added.
Private Shared rights As Dictionary(Of ws_garuda.EUserType, List(Of ERight)) = Nothing
Private Sub initRoles()
rights = New Dictionary(Of EUserType, List(Of ERight))
[CODE]..................
I understand the page lifecycle and how i need to add the dynamic controls on page_init if I want to take advantage of viewstate. Also I know that I should try to avoid dynamic controls when possible. The dynamic controls are created depending on an object that is created from custom event arguments sent from a custom treeview. Problem is I need viewstate so I need to create them in page_init but I don't have the event args to create the object that tell me what controls to add until later in the lifecycle.
Private Function GetEventArgs() As npTreeViewEventArgs
Dim control As Control = Nothing
Dim e As npTreeViewEventArgs = Nothing
[code]....
I use this in page_init to create my object and controls.
Server Error in '/' Application.Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEvent Validation method in order to register the postback or callback data for validation. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true" /> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.Register ForEventValidation method in order to register the postback or callback data for validation.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
[code]...
In WPF I am looking for a "do not show again" checkbox on my messagebox popup.Does anyone know where I can get such a control or maybe how to copy the style of the regular WPF messagebox so I can create my own?
View 3 Repliesc# - WPF: message box with checkbox added
View 6 RepliesIf the user adds an info and it is already in the database it should not add that info. My code basically checks only the first row, and when I add another data(From another row) it inserts. I have a/n autonumber in my id field.
If reader.Read Then
If reader.Item("SchoolName").ToString = txtSchool.Text Then
MsgBox("Information Already Added!!")
Exit Sub
[Code] .....
I tried using while but it will not stop and it is still adding(A lot!!).
what is wrong with my code? Data could not be added into database.
[Code]...
I have done the following, however haschanges(added) is not true but set to 'Modified'. When will actually 'Added' will be set? I am relying on this flag to see whether the record is newly added or an existing one.[code]
View 3 Replies