Have A Column In The Datatable Called Amount And A Textbox Acting As The Filter Called Say Maxamount To Set It?
Feb 9, 2011
i was wondering if it possible to have a condition where lets say you have a column in the datatable called amount and a textbox acting as the filter called say maxamount to set it so the rowfilter when filtering the table will sum the number in the amount column until the number in maxamount is met, then stop and only return the rows where the total sum of the amount column is equal or less than the maxamount value, so i guess if the next row takes us over the maxamount it discards this row and returns the rows previous to it. is this possible using datagridview rowfilter or should i be loooking elsewhere to achieve this?
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Jun 5, 2011
I have an sql table called Stock with two fields called StockID and StockCode. I want the user to select the stockcode from a combo which in turn populates the stockid for that item into a lable on my form. I have already populated the stockcode into the combo but dont know how to compelte the rest.
Imports System.Data.SqlClient
Public Class cbo2
Private Sub cbo2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
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Aug 11, 2009
I have a form called FrmPracDetails which is built up with a List view called LvwColProc. Therefore when you click a field on the LvwColProc it takes you to another form called FrmColProcessing, here you can make changes to certain fields which are also present on FrmPracDetails. What I want to do is when you make changes on FrmColProcesing and Click the Save Button (which calls the Save function)the changes appear instantly on FrmPracDetails. Please note, FrmColProcessing will always be open next to FrmPracDetails. I have tried to put this code in the Save function present in FrmCol Processing as shown below, but it doesnt Refresh FrmPracDetails form. [code]
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Apr 2, 2012
I have the following line of code in my program:
JCL_History.Enqueue(JCL_History(I))
This JCL_History object is basically a Generic.List encapsulated in a wrapper and has the following method:
Public Sub Enqueue(ByRef value As String)
If Members.Contains(value) Then
Me.RemoveAt(Members.IndexOf(value))
[Code].....
In my testing I have 2 items in this JCL_History list. When I call that first line of code I posted (the one that invokes Enqueue) with I = 1 I expect the first item to be shuffled to the bottom and the second item to be shuffled to the top.
After the thread returns from Enqueue I notice that this is exactly what happens to my list, HOWEVER if I hit the "step_in" button after the execution of Enqueue I go into the Default Property's set method where Index = 1 and value = and it screws everything up, because the item that got shuffled to the end (index 1) gets overwritten by the item value shuffled to the top.
So basically the set method on the default property is getting called at what I think to be a completely ridiculous time. What gives? By the way I'm running VS2005 on XP.
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Apr 11, 2012
Can you look at my coding and let me know what I'm missing or doing wrong?I have a SSRS report that is called from a ReportViewer control and the ProcessingMode for this control is Remote. The report also has 1 parameter in it's DataSet.In the code I placed a MsgBox to make sure the code is finding the parameter and returning the parameter name. I am trying to stick the value of 10 into the parameter for playerID 10. Data for this player does exist.
I believe I need to add some more code to make this work but I'm not sure what else to add.
When the code executes the report is displayed but no data is shown in the report.
[Code]...
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May 13, 2010
I recently found an awesome tool called "Freemind" that is called a 'mind mapping' program. It's similar to MS Visio but way cooler and more automated.I reeeallly would like to integrate this into a VB.net Form, but how?
Has anyone seen or heard of mind mapping inside VB.net before? Are there programs out there already that work with VB.net or anyone have an example they have seen / built that works?
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Oct 18, 2009
Where am i going wrong with this line of code? I think its with the (REO/Bank_Owned_Desc)
compute
[code...]
There is no column REO is REO/Bank Owned Desc, I would think it doesnt like the /between REO and Bank.But that is what the column is called in the database.
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Oct 13, 2010
I want to add value to column called [DateDifference] ,the values equal the diference between other column called [date of consumed] I want to subtract all the values in this column from the minimum date in the column exe: the values will insert in [Date differnce] column 0 1 10 15
The code I wrote but it doesnt work
[Dim sql As String
Dim b As Integer
Dim thisdate, mindate As Date
[CODE]...
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Jan 21, 2010
i have a datagridview binded with the datatable via its datasource property....now i want to add the Amount column of the dgv and display the total amount in the textbox,if the amount is greater than a certain value then i want the cell to coloured red so i did this code and it worked great:
Dim i, j As Integer
For i = 0 To DataGridView1.RowCount - 1
j += Me.DataGridView1.Rows(i).Cells("Amount").Value
Next
[code]....
but my problem is that i want the red colour of the cell to blinkafter every 2 seconds....how to do this?i need to handle the timer tick event for this but i am not able to do this.....
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Mar 11, 2009
[code]Gets me one column called Length with the size of FullName in it?
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Feb 18, 2010
I updated my DataSet with a new string column called WorkingEmployee. I dragged the WorkingEmployee onto my form and it seems to work ok, except when I change a value it does not save to the database like everything else. Any ideas on whats going on?
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Feb 15, 2010
I've created my own textbox control which has a property called 'StatusBerText'. The idea is when the control has focus an event is raised and the text is shown in the status bar.
Below is my code which works, it starts with me.controls and looks for my textbox to add the handler. If it comes across a container it then starts again looping through all the controls in the container.
Private Sub NewCompany_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
SetControls(Me.Controls)
End Sub
Private Sub SetControls(ByVal obj As Object)
[Code]...
As I said this all works, however, I would ideally like to put the 'SetControls' in a class so I just call it in each form rather than having to paste the entire code in all the time. To do this I will need to pass the address of the StatusBarChanged function through, is this possible?
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Feb 26, 2007
My code Adds a New Row from a Source Table called "objTablaOrigen" To a final table called "objTablaDestino". This tables are passed ByRef because they come from a DataSet respectively. objRowNuevo is The Row that will be added to "objTablaDestino" The data from "objRow" is well copied to the "objRowNuevo" (that is the new Row with type of objTablaDestino).
'The problem occurs when the instruction Add is executed. ¿What happens? The new row is added as well, but this generates an Exception with the next message:
[Code]...
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Jan 1, 2010
i've tried to make it so when i Click "Button1" what ever is in TextBox1 will be added to an .txt file called "MutedUsers.txt" But i want every User on an seperate line
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Mar 9, 2012
Is there a way to find out if the "TextChanged" event is fired because the user is typing into a textbox or the programmer called myTextBox.Text = "something"? I don't want to react when the user is typing each letter into the textbox so I am using the "Validated" event to catch when the user is done so I can react. The problem is I don't have a way to catch when the programmer does "myTextbox.Text = "something". The only way I know to catch changes there is to use TextChanged but then I don't want to be reacting when the user is typing each letter into the textbox.
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Jul 13, 2011
in the .net dll (named "Calendar") I have a public class called clsCalendar that has several public properties and functions. In the Calendar project properties I have checked "Register for COM Interop" on the Compile tab. Also on the Application tab I clicked the "Assembly Information" button and selected "Make Assembly COM-Visible".
I have tried every tip/idea I can think of that I stumbled across such as running sn.exe and then in the Signing tab of Calendar properties checking "Sign the Assembly" and picking the .snk file created from running sn.exe.I have tried running "Regasm.exe" against my Calendar.tlb file with the /Codebase option. Nothing seems to work.When testing in a .net app, I needed to code as "new Calendar.clsCalendar" to get it to work. Our existing vb6 apps that need to call the dll simply say "new clsCalendar" and I can't change these apps.
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Mar 10, 2011
I am developing Restaurant POS Application with home devliery module. Customer call to restaurant and give the order. so whenever customer calls comes i need to show the pop-up on my desktop application with particular customer information. Please guide me how to do this. I am using visual studio 2008 (vb.net)
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Sep 8, 2009
Private someSub()
If someBoolean = True Then Exit Sub
' do some great work because someBoolean is False
End Sub
I know there is a name for this. The idea is to check something and if it isn't what you want then you stop code processing. I thought it was called "escape pattern", but Google isn't confirming that name.
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Jan 8, 2010
So I've got some code that I've written in C and compiled into a DLL. This code is called by my VB.NET code. That interface is working fine, but I need to debug some of the C code. But obviously since it's not in VB I can't use the Visual Studio debugger. I've tried attaching a GDB debugger to the process while it's running. It lets me set the breakpoints and it even stops at them, but it doesn't let me see the lines of code. My code was compiled with debug information, so I don't know why it won't let me see it.
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Feb 4, 2011
I have a project I'm updating to Framework 4. It's not originally my project, I have inherited it from a former colleague, so I'm not completely up to speed with it yet.
In one of the libraries of the project that controls context menus, I get pInvokeStackImbalance MDA alerts on the line:
Dim c As Color = Color.FromArgb(GetSysColor(COLOR_MENUBAR))
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May 14, 2010
I've started programming and have this piece of [code]...
The problem is: It seems to not get called at all when i close my application!?
I've tried using msgbox instead of code to see if it worked, setting cancel = 1, using breakpoints... I think I can pretty definitely say it's not getting called.
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Feb 20, 2012
I am having trouble getting my .ASPX page to call my .ASHX file. Does anyone know what I might be leaving out? I have posted my entire .ASHX file below along with a little .aspx.
Imports System.Web
Imports System.Web.Services
Imports System.Data.SqlClient
[Code]....
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Jan 25, 2012
I have a really annoying problem. I use GetAsyncKeyState() to determine if a key was pressed or not.Unfortunately, that event fires as long as I hold down a key. Is there any way to check if a Key was released?
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Mar 26, 2010
i have the following property declaration
[Code]...
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Apr 10, 2012
I have a job object for long running operations that works like this:
[code]...
This worked fine a year ago, and I moved on to other things. I had to return to this code today, and when I run it now, the OnDoWork override is simply not called. A breakpoint in there isn't hit, debugging messages aren't written, the method is simply not called, and no errors are thrown anywhere. I can't think what would have changed that could cause this, since it seems like a low level framework thing. The rest of the app loads and runs fine, the main window shows (it's a WPF app), and button click events fire. It's just the background thread method that doesn't fire. What could be going on here?
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Apr 4, 2011
i have problem when addnew row at keyup event for datagridview control. i want to add one row when method addRow() called.
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Jul 10, 2011
I have a website where people send each other messages Recently I noticed that sometimes the same message is sent more than once
For example, a message is sent four times within three seconds or twice within a second.I do not understand how this could happen, once the user clicks on the button that sends the message .So all the window switches and a message showup saying "the mail is sent successfully." I checked that if the user refreshes the page after it sends a message, then really the message is sent again.But I do not think that's the case, becouse the message is sent twice within one second.I am writing in vb.net and using mysql data base.Maybe it's related to the queue for the db, i do not know.Here's the code:
Function calls:
Call GlobalFunction.update_mailbox_table(user_id, receiverId, txtMessage.Text, private_picture)
the insert function
Public Shared Sub update_mailbox_table(ByVal user_id As Integer, ByVal receiverId As Integer, ByVal message As String, ByVal[code].....
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Jan 20, 2012
I have a string that contains a slew of text that I'm returning from the server.
I wanted to know if that string can be called on the client-side?
What I did was reader a text file to a string Placed the string into a rich text box created a sub routine and declared a variable "X" to equal the rich textbox and finally called the sub into the web browser but I don't get anything called when I call the sub.
Imports System.IO
Public Class Form1
Public Sub Button1_Click(ByVal sender As System.Object, ByVal e As
[Code]....
Here is exactly what I am trying to do... I am trying to code my application to navigate to a website (my own) and fill a web form.
The only way that I know to do this using the web browser is to have the information in the document_completed section of the browser. This works great but once I compile the code and setup my application I don't have any way to update my application with new websites.
What I was trying to do is go ahead and code my web browser document_completed with about 5 of my websites. I would need to have the ability to update my application with new sites and the only way I could do this was to create an update and patch my current .exe of the application.
My work around was to try to create a generic sub routine, in the sub routine I would tell the application to navigate to a folder, read each text file in a folder (which would contain the document_completed code for the webbrowser) and then put the code into a string...finally I would call the sub into the webbrowser.
The thinking behind this would that I could add/remove website by just adding/removing the txt files in the folder.
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Dec 10, 2009
I've got a 3rd party C application that's compiled to a non-.NET non-COM DLL. It has one simple function declared like so: Declare Function CapiTaxRoutine Lib "taxcommono.dll" (ByVal sInData As String, ByVal OutputData As String, ByVal intINPutLength As Long) As Integer
If I place the taxcommono.dll in my path (C:WindowsSystem32 is what I'm using because it's what the vendor recommends),I can wire up a call to the function and it works just fine.It returns a 1 or 0 for success/failure, but it also sets the value of the OutputData string parameter (using some C pointer magic I'm not familiar with) to a huge fixed width format return record that has the data I need.When I call it from a .NET .exe application, it works just fine.When I try to call it from an ASP.NET application via a referenced compiled .NET wrapper DLL, it runs but can't set that string.In order to get it to run, I can't have taxcommono.dll in my path, but rather have to place it in my Bin directory of the web project.Does anyone know of a reason it can set the pointer when called from an .exe application but not when called from a web app?The .NET wrapper DLL I'm using works when called from our ERP software, which is not web based. But when I add a reference to that same DLL in the web app, it won't give me that output value.am used to just getting a return value instead of a function setting the value of one of my input parameters.
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Sep 21, 2011
I use webclient to download a file Async. Defined in the Globals.
Public WithEvents wbclient As New WebClient
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