DB/Reporting :: Getting Query Fields Into Text Box?
Jan 14, 2009
I am writing a little program that does the following:Allows the user to enter a id number.Then when the find button is clicked, we connect to the database and run a select statement for the id.I am trying to figure out how to get the first name, last name and birthdate into textboxes on my form.
I would like to have a way to display a messagebox if the resultset = 0 so as to tell the user no records found.Then if the information is correct I am going to have a button to update the information which is going to call a stored procedure I have in place to update the record.how to make the connection which I think I have working and then loading the individual fields into the appropriate textboxes.
I've been running into some errors with converting strings to dates in the following code. I have recently added the intcall.Value = DateTime.Parse(txtIntCallDate.Text) function which had gotten rid of the error message, however the records are not being updated, any of them on the form. Prior to this the strings were being updated just fine. As long as there is a date entered on the form there is no error, if it's left blank i get the "Problem converting string to datetime"
I have an application where I would like to allow the user to change one field in a datatable but leave the other ones uneditable. I am using a datagridview to do this but I can only make the whole table editable or not. The result should be an order form where you have a determined product and should only be able to change the number of items.
Trying to export fields to excel. Have set the references to Excel 12, But, the i, j loop cuts short the number of fields to export to 10 when there are about 16 to export.
In the long rung, I'm trying to setup a program to have a local database of files (It's a media player, so think of the library in WMP). I'm just trying to figure out how to do it, so this is a proof of concept thing I'm having a problem with.
Here's the code:
Code: Dim dsDataset As New Database1DataSet Dim drRow As Database1DataSet.FilesRow
I use the following code in vb.net to search across several Access database fields, which works well, is there a way to find out WHICH field had the search data in?
[code] Public Function Incomming_Number(ByVal strNum As String) As String Dim oConnect As New OleDbConnection Dim sql As OleDbCommand
experience on how to create an engine using C# (VB.NET is okay too) that is generic enough to handle most cases of MS Word text fields I need to fill with data I'm getting from a database? In short, I'm about to embark on this little Office automation excursion and I'm hoping a little bit of feedback here.
I have a combo box and a subform that uses continuous forms format. When Combo box changes, the subform POINTER points to the correct record. How could I at the same time highlight (change color) of all the fields in the selected record?
i have a table named item_details.i have some field named item_id,item_name,quantity,supplier_name etc.i want to see all details as per the item_id given in a textbox.i also want to see details as per the item_name is given.i can use 2 forms to view this type of query..one for item_id..and other to view from item_name.but..i want to use tabcontrol..in 1 tab i want go give the item_name...and want to get the details.and other tab i want to give the item_id...and want to get the details....and whenever i gave wrong information.an error message will be shown.
I am getting the above error in my code. I've searched the net (on this site and others) for a solution to this problem and it seems that its either something to do with a field name being a reserved name ie. Date, Time etc.... or its missing (') or (") in the SQL command. ive tried both these solutions to no avail.
Dim objDataAdapter As New OleDbDataAdapter Dim objDataSet As New DataSet Dim objDataReader As OleDbDataReader Dim i As Integer Dim SQLstr As String [Code] .....
here is my code. dont seem to know whats the problem. i have 12 data fields in access excluding the ID field.
Dim strCon As String = "Provider=Microsoft.jet.oledb.4.0;data source=C:UsersdexterDocumentsdesktopcsci14databaseMuseum-final.mdb" Dim dSet As New DataSet
i am making a simple testing application within visual studio 2010, thought im gonna be direct. in ms.acces i made a database with a few tables, this one is about the table : leden. the error indicates that i simply do not have enough values to insert into the table and i think it has to do with the ID(autincrement in acces)
My LINQ query contains the following Group By statement:
Group p By Key = New With { _ .Latitude = p.Address.GeoLocations.FirstOrDefault(Function(g) New String() {"ADDRESS", "POINT"}.Contains(g.Granularity)).Latitude, _ .Longitude = p.Address.GeoLocations.FirstOrDefault(Function(g) New String() {"ADDRESS", "POINT"}.Contains(g.Granularity)).Longitude}
The query works, but here is the SQL that the clause above produces
SELECT [t6].[Latitude] FROM ( SELECT TOP (1) [t5].[Latitude]
[Code]....
but this produced an error: "A group by expression can only contain non-constant scalars that are comparable by the server."
I have a problem with unicode character, as i create a database in SQL Server 2005. I want to query from a table that criteria fields are contain unicode character i.e NVARCHAR.
e.g: SELECT * FROM tblMyTable WHERE MyField='ភាសាខ្មែរ'. But when i did like this all rows that contain Unicode Character always display. it doesn't fit to my criteria
I'm trying to query old Access database tables and compare them with SQL Server tables.They often don't have primary keys, or they have extra fields that had some purpose in the nineties, etc., or the new tables have new fields, etc.I need to find records - based on a set of fields specified at runtime - that are in one table but not another.So, I do this kind of query all the time in SQL, when I'm comparing data in different tables:
dim fields_i_care_about as string = "field1, field2, field3" 'This kind of thing gets set by a caller, can be any number of fields, depends on the 'table dim s as string= ""
[code]....
It tells me it can't convert a Boolean - Is there any way to do this without Linq expressions? They seem far more complex than what I'm trying to do here, and they take a lot of code, and also I can't seem to find examples of Expressions where we're comparing two fields in a subquery.Is there a simpler way? I know I could do the usual EXISTS query using JOIN or IN - in this case I don't need the query to be super fast or anything. And I don't need to use a DataTable or DataSet - I can put the data in some other kind of object.
I have a form that when you click a button it begins a query. I want the user to know that they already started a query and they basically need to wait and not hit the button again. To do this I have a list box that has an lbResults.item.add() to it
Code: Private Sub btnControlKSMS1117Query_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnControlKSMS1117Query.Click
I'm fairly new to visual basic and have a problem that is probably quite easy to solve yet I have been unable to do it so far and am about at wits end.I have an access database with a table that contains a list of cities and states. what i would like to do is to populate a combo box on a vb form with a list of the states in the states column. the query that i have is as follows:
SELECT DISTINCT State from Cities I have previewed the data in the dataset designer and it works, i just can't figure out how to make it fill the combo box. i initially created a table with just all of the states and then used a binding source and table adapter to bind it to the combo box, but if I'm able to figure this out this would help with my application going forward
I have a string qText with the text of a query in it, say qText = "select * from Data". how can I execute it to fill a TableAdapter I have in my form with the resulting data?
I want to ask how to i , passed the value i get from my previous form using this"Login.user.Text" to a Query Builder to filter the result based on the value of Login.user.Text" .
SELECT LecturerID, Lecturer_P FROM Lecturer WHERE (LecturerID = ??? )
i'm trying to make a query to a sql database, so when the user enters the id, the columns related to that id will be displayed. but, im getting an error: "Object reference not set to an instance of an object"
the code:
Code: Try TextBox1.Text = InputBox("Enter the Id.", "fsdf.") query = "select * from Students where Id = '" & TextBox1.Text & "'"
So I'm working with a mysql database, and I already have some queries down. I have to make a windows application form in vb.net that can display the results of these queries in a dataGridView.Lets say I'm working with frm1, and i have datagrid1 which will be filled using the query "select * from xyz" when btn1 is clicked.Can someone please take me through the right steps to do that? References needed, connections to be made, etc. I did look through online materials, but they are mostly way too long and not dataGridView specific
I have a simple "two-tables" database (SQL EXpress) and a very simple application (VB 2008 Express). The two tables are customer and order and their structures are:
customer(IDcustomer, LastName, FirstName) IDcustomer=primary key orders(IDord, Number, Description, IDcust) IDord=primary key the tables are related (IDcustomer-->ID cust)
In VB2008 environment I create a dataset, by means of Data Source Configuration Wizard, which encompass both customer and order tables (xsd file). By opening xsd file I set the relationship in the following manner:
In my form I show customer table in detail-mode and orders table in datagridview-mode. Two Fill method are created in the Load event and they work correctly.In "CustomerTableAdapter" I create, with QueryBuilder, a search query (say LastName query) and I write the following code:
Private Sub frmSearch_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.CustomerTableAdapter.FillByLastName(Me.CustomerOrdersDataSet.custom er, "D") 'All Lastnames with first letter = D
I have the following query that works fine if I cut/pase into an SQL query in access, but when executed in VB the loop is skipped - ie, no data is returned.
I'm using vb.net express with access 2010.Everything is working fine except for a simple query:SQL: SELECT * FROM Customers WHERE Name Like 'Ale*'Which returns all the names starting with Ale. Now in my .NET code I wrote this:cmd = New OleDbCommand("SELECT * FROM Customers WHERE Name Like " & Chr(39) & Name.Text & Chr(39), connection)Now when I start the app and in my textbox "name" I write Ale* I have the following expression:SQL: SELECT * FROM Customers WHERE Name Like 'Ale*'But when it executes from .NET (dr = cmd.ExecuteReader) it doesn't find ANYTHING.
