DateTimePicker ( Datediff) After Connected To Database?
Apr 15, 2010
i am using Visual Studio 2008 and VB.NET 2008 and SQL Server 2005 as the database. I just finished designing & writing codes for a customer information and , however after it has been connected to the database only one of the datetimepicker can be click, and the rest of the function including in the form are not working!it seem that the form stuck and NOT responding. i cant even close the form (X button), so i have to stop the process using compiler (visual studio 2008), however if i press the 'Delete' button before the 'Add' button, it will successfully delete the data.. but if i disconnected the form from the database, (disabled the form_load codes [put 'quote']) the both of datetimepicker will work and able to view the date interval (after pressing the 'Calculate Period' button) in addition how to make it appear automatically in screen without using the button? below are the code, I try to make some other form.. but it is still the same
Code:
Imports System.Data.SqlClient
Imports System
Imports System.Data[code].....
I'm using datediff to establish difference between two dates using datetimepicker.i.m nnot getting the right results. a one day difference returns a 0, a two day difference returns a 1 etc. the code I am using is posted below.
days = DateDiff(DateInterval.Day, dtpStart.Value(), dtpEnd.Value())
I'm viewing reports on a VB.net form using CrystalReportViewer. Once a report is opened, the Access database that is used within the report is locked (i.e., the Access MDB file can't be deleted). Even after the report is closed, the database stays locked until the VB.net app "ends". This is a problem because I want to be able to delete the MDB file at some point while running the app and can't. The VB.net app starts by opening a form named "Startup". No database connection occurs here. A button is pressed using this [code]I must not be properly closing the CrystalReportViewer or the Report form.How do I close the Crystal report and unlock/release the Access database?
I have connected a database query that I made using MS Access 2007 to my form in VB 2008. I know how to pull the fields onto the form and get the information to display on the form by clicking the binding navigator at the top of the form. My question is that is there a way that I could input the ID number in a textbox and click a button to display the rest of the field in some more textboxes
On my program I am trying to make a ToolStripStatusLabel's text change to "connected" if connected to a network and if not connected to a network change the text to " Not Connected" then I don't know how to display a image if connected to a network or not connected. So if the computer is connected to a network I have a image that I would like to be displayed next to the ToolStripStatusLabel. And if not connected to a network, can the program display a different image? I tried this:
I am trying to add a data source from a connected database but it doesnt seem to be working well.Initailly the table name was mispelled and there where fields missing. The table was modified to include the new fields and it was also renamed.The changes are reflected in the dbml file within the project, and the solution has been built with a sucessfull result.The problem is, when I try to add a new data object into my solution, the changes that were made to the database arnt reflected in this new data object.
i am wondering if it is possible to get the source code for the following:
1. use vb.net code to set on/off primary key when connected to Access database
2. update a particular data.
for e.g: hostname: AES-19 *use source code to check data in Microsoft Access database if hostname is new, insert into Access. if hostname already exist, update into Access *so that i will not have duplicate data in Access.
I have connected a form to my database, which displays info when the form loads, butttt it displays them from load, which is not what I need, can someone tell me how to clear the form upon load so that none of the textbox fierlds have data within them? Untill I request them to.
I am designing a Point Of Sale system to be used by sales representatives. The sales rep should be able to place an order of a specific product on behalf of the customer. I have defined my relationships between the tables, Product, Order and Customer. When i try to save my orders i get an error that says "you cannot add or change a record becuase a rerlated record is required in table Product"
I have a thesis project. it is composed of a webpage created on php and a system using vb.net 2008. As of now , they are both connected to the same database. I am wondering if it is possible that if i packaged the system and live the website, will still be connected with one database?
I have a system that can add, edit, delete and search data that is in ms access. That ms access is connected to my vb 2008. I'm upgrading my system so that it can print the access file.
I have a connection to an access database, I have used the data sources tool provided because in this particular instance I don't want to do much with it other than display the records (which I can do) and edit them (which I'm haveing some trouble with).I have created a system whereby the database is connected to using the preset tools available like; BindingSource, TableAdapter, BindingNavigator etc.
I also have a button for edit. This doesn't work and I was wondering if anyone could help me with this? I can't really provide any code for this, because I didn't code the connection by hand and the code I have been attempting to use for editting the records in the database doesn't even sort of work.
I am trying to develop an application using VS 2008 connected to MySQL database. Previously in vb6 i was using adodb and now when i googled and got a few sample projects done using VS2008 in which most of the module codes were OLEDB.....To which method should i stick to...?
when i will enter form no. in the text box this should check the on the lost focus event either this form no. is already exsist or not.if exist show msgbox?
When a vb project is connected to ms access(DB) whenever u make any changes in d db using addNew or insert or delete follwed by update command the changes are reflected in copy of original db in the debug folder of our project.in which updated values chnges with each run .. no changes are reflected in d original db.is dere any command to make dese changes permanent.
I have a windows app that has a bindingNavigator connected to BindingSource that connects to an Access database. I am manually adding a record to the underlying database using an OLEDBConnection/command (cloning the current record). The insert into the database works fine, what I am not sure on how to do is force the bindingNavigatgor to refresh and read the new record and refelect it in the record count/next/previous buttons.Jack
I've searched the forums but never seems to find an answer for this one.. I recently connected to MySQL database server "Automatically" in Visual Studio 2010. I want to know if there's a way to determine the connection state for "Automatically created" connections in Visual Studio 2010. I know how to do it for"programmatically created" connections but just want to know how on the auto-generated ones.
I got a DATASource connected, changed the table to details and draged it on to my form, but then it shows me the bindingnavigator at to of my form.
q1. how do i make it so every time this form opens it is like add new?
q2. how do make my own save button (don't want the binding navigator at top)
q3. in my form all my collums aper as textboxes how can i change it so there is a drop down menue that has forexaple 3 pre defined items that the user has to select on of.
i can't get DateTimePicker to insert into Access databse. I've tried all the suggestion i can find from this forum, so i'm thinking my problem is different?my table has a column date which has a Date/Time format
my code Dim cmd As OleDbCommand Dim sqlstr As String, ans As Boolean Dim mydate As DateTime mydate = Me.dtPickerT.Value
how to save nul Value of DateTimePicker in the Database note: i make dtp become null value like this
dtp.customformate=" " single space and the code to bind dtp.DataBindings.Clear() dtp.DataBindings.Add(New System.Windows.Forms.Binding("value", Me.GetAllCrimeDataBindingSource, "Date", True))
I have an accounts program. My cash book shows data based on date picked from DateTimePicker. Cash book is not entered everyday. I want to make my datetimepicker so that based on dates found in the database, it changes colour or enable / disable some dates, for which cash book has been entered. How is it possible?
I am trying to add a record into the database wothout much success. sometimes it works and sometimes it returns error "overflow exception unhandled".And even the database is not all the time updated. How do you add the Datatimepicker value into the database...?[code]I'm using VS 2008 and MsAccess as my database connected through the database connection wizard
