I have this Add User Form and a Function Class, I need to know if the username typed in the Add User Form already exist in the database, so that I can warn to change the username but I have problems doing that.
Here's the code for the function class:
Public Function addUser(ByVal arole As String, ByVal ausername As String, ByVal apass As String, ByVal aname As String, ByVal aaddress As String, ByVal aregion As String, ByVal aprovince As String, ByVal atown As String, ByVal adate As Date, ByVal acreator As String) As Boolean
I sware I am loosing the will to live, I have tried to accomplish this by my-self for about 2 weeks now and I am still at square one.
I am writing an application for booking conference rooms and I need a login form.
I have created my database called Users in sql and inserted 2 default login accounts, admin and default.
I dont know how to compare the data in my database to the data typed into the username and password text boxes on the login form.
see what I have so far
Imports System.Data.SqlClient Public Class LoginForm1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
I know that I have to create a click event handler for the login button and put my code in there to compare the data
I have a purely XML database. It's stored as XML, there is no other database file. I did this by first creating a dataset in VB, then adding tables and relationships. I load the database by calling DataSet.ReadXml(FilePath), and save the database by calling DataSet.WriteXml(FilePath).
Now I need to make schema changes, but need to preserve existing data. How might I go about doing this? As soon as I load the database I loose all data if I change the schema in the dataset designer.
I have searched for changing database schema, but everything I find deals with real databases, not XML only ones, and the info doesn't apply because they are using db connections and then running sql against it and AFAIK XML databases have no way to "connect".
I have this create user form in my system, I want to validate in my database if the certain username that is inputted has already existing, how will I do that:Here's the code I'm using for the create button in my form:
Private Sub createBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles createBtn.Click Try If addUsername.Text = "" Or addPassword.Text = "" Or addRole.Text = "" Or addName.Text = "" Or addAddress.Text = "" Then MsgBox("Please Fill up the required Filled")
I'm fairly new to ASP.NET & VB.I've been asked to take an existing textbox that is automatically filled with the current date and allow the user to either add a "+" or "-" and a number or a spcific number and convert that into a date.I underdstand the basic concept on how to do this, but I'm running into some problems using the proper commands in order for this to work.The Textbox is called txtDate.What I've tried to do is this:
If txtDate = '+' Or '-' Then DateAdd("d", txtDate, today) End If
Here is what the whole thing looks like:
Protected Sub DateEnter_Click(ByVal sender As[code].....
I have a workbook (Workbook1) that runs through some steps using visual basic, which ends up opening another workbook Workbook2). Once Workbook 2 is opened, I need to copy a section of data from it, into Workbook1 int a specific worksheet. I was able to do this by recording a macro, but the challange is, the name of Workbook 1, and Workbook 2, will vary by User. When I created the macro it uses the files as they are currently named. The section of code is below.
I'm creating another database searcher, only this one is a little better user friendly than the one I made with a datagridview. I'm using the "details" of my dataset(CustomersDataSet) and trying to add a record into an existing database. I'm using this code
which worked for me when using the datagridview, but for some reason it won't work now. Even when I check for my test "add a customer" in the access database itself, it isn't added.
I am using SQL server managment express. I have 4 databases in it and got a bug on my computer which I could not get rid of. I saved these to disk and reinstalled windows, I reinstalled SQL server and I am now trying to add my 4 databases. Can any one help me with this, I can add a new database but not an existing.
I've been looking all around and i have not found a appropriate solution for my question.Here it is. I've a database table which has the field "username" and "password" and within the "username" field, there would be users like "admin","cashiers" etc. I would like to generate a login page using php that actually detects what are the users logged in as. additional info: I'm using Flash, php and MySQL. So i would just need the solution to how am i to detect.
I have a program which is almost complete, it gets data that is new or newly modified (well at least since my program last got this data). The problem I have is currently i'm adding this "new" data but i've just clicked some of this data may be in my database already just updated. For example, I have added some user data to my database but a user has just updated their user name - so this is now newly modified! I don't want to add it as new data I want to update my current row in my database. My question is how can i do a SQL query in my access database to see if this row exists or not?
I need to add a column to an existing table in my database. I am having trouble adding a column to my database. I physically go into Microsoft Access and add the column, my problem comes up when Visual Studio does not recognize the table. Basically, I think I'm doing something wrong.
i am using vb.net2010 and mssql as my database. what i want to do is when i open the form, the database will auto increment the student id and show it on the text box.
I am working on a database application for my Class Reunion in VB.et and VS 2008, My problem is when i build the program it will only work with 1 Database For my Class year, I would like the ability to be able to create a new database for a different classyear than the 1 i build and pre-Populate, so the person using it can do more than 1 year and keep the databases seperate.
I'd followed Beth's video which nicely explains how to setup a "connector" to an existing database. Also, I've updated a method to retrieve information from one of the tables.Now, I need to retrieve information from the table, but I don't succeed to find the "method" to do so (I don't get to the situation that "Fill" or "GetData" are recognized methods). Could anyone send me references through which I could easily understand. how this needs to be done?
I have a series of .DAT files I need to read into vb.net and then parse the data into a format that can be easily read into an SQL database that already exists. Would I be using a StreamReader object? Or is there a different way to go about this?
here's the scenario. There's 2 types of employees; Worker and Manager. The worker will have to access the page 'worker.aspx' and the Manager will have to access the page 'manager.aspx'. In my login database (Access 2007) I have the first name, last name, username, password and job title of both workers and managers. Ex:
I have a form where when the user clicks the button the values of the form are stored in SQL database. I want to write code in order to check if a specific textbox-value already exist in the database table (in the field "Name"). I 've tried writing something but it doesn't work properly.
In my .NET application I have to manage bookings for rooms. I enter the room booking via an SQL query to a MS Access database using an INSERT INTO statement.
Before I insert the booking, I need to check if a booking already exists for that time period, and if it does stop the user from being able to book at that time.
I have written code to retrieve a database result on the day and time of the booking they want to book, and the fact that Access would return data would mean that the user is trying to book over someone else.
how I can check if I have a resuklt returned. My code:
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=D:Databasedatabase.mdb;") cn.Open()
[Code].....
But this doesn't work, it displays the messagebox regardless of if there is a row returned or not. How can I check if a row was returned?
i have a checkbox on a form, which is of type boolean in the database .when the user check the checkbox, before the data enters the database, the program should check if there exists already a "1" on the database for this field.If so the user is not allowed to check the depot.
I'm a little confused about checking values in a database. What I want to do is see if a tuple such as the following exists:
[Code]...
The invoice_num is not null, it's blank: " ". What I want is to find if such an entry exists, where the invoice_num is " " and update it with a number entered into a textbox. I'm a little confused about if statements and cases in SQL, so if someone could point me in the right direction, that would be great!
I would like to make a copy of an existing database in microsoft SQL Server 2005 in code, if that is possible. I'll need to make a copy of the original one, and change the name to some other name choice. All tables, stored procedures and such will be exactly the same.
I have text box and button when i clik tht button it has to display all the data if it is relevent to the data else it has to say no data . my project is about track cd. name textbox that i want to search is txtTitle.
i want something like search forum in this website when u clik on search it will get the data same way i need the solution either it is from database or index service
how to update records on an existing access database using vb.net with just a textbox and a command button and how a specific record of a field can show up in a label or a textbox
i connected vb.net to my access database by just clicking on "add new data source">>"new connection">>"microsoft access database file" and just continue..tested connection and done.
you can see in the screenshot of my form, by default the left side textboxes are disabled but they're enabled if the user checks the checkboxes and disabled again if unchecked.
assuming that the textbox is already enabled and i want to enter a value in the Brewed Coffee area of the form...for example 5. when i click on my Submit button the value of that particular record in the database will be updated, so in my table the value of the quantity field in Brewed Coffee will be 5.
another thing is that how can i see a particular value on a label or textbox from my database like on the Prices area. in my database if a product's price is 80 then it should show a 80 in the label. the values of the prices from the screesnshot of the form are not the ones on the database xD i just typed them in.
I am creating a program for an existing database that stores the info into the database. So can I link an already existing database in MS Access to a GUI?
I am trying to check where an item in my array list exists in the database.The list would have already been created at an earlier stage.Now that some items may have been removed from the database, I wish to check the list against that database before removing the items, from the list, which are no longer in the database.The following code removes all items from the list rather than just each one which doesnt exist.[code]....
I am using a MS Access database as the backend of my VB.NET application. I am entering users details into the database using an INSERT INTO statement:
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & config("DatabasePath") & ";") cn.Open()cmd = New OleDbCommand("INSERT INTO blah blah blah...", cn) dr = cmd.ExecuteReader
