Select More Than One Field From A Database?
Dec 28, 2008im trying to gather information from 3 tables at once
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im trying to gather information from 3 tables at once
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There are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
I created a local Database in VB2008 with 4 tables, the problem is that I have a textbox in one table and a combobox in other table and I want that the information that I put in textbox appear after in combobox from the other table... that's possible?
Table: Filmes ... Field: NomeTextBox
Table: Tempo de Aluguer ... Field: Nome_FilmeComboBox
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
View 1 RepliesHow can i select all the entries from a field?
e.g. here's the database:
| Username=Password |
| Nick=23123|
| John=asdf|
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to do this : Select previous field based on previous field in sql. I had tried a lot of ways but it seems doesn't works.
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I am creating a database in VB.NET for a movie rental place. I currently have three forms;
Member Information
DVD Information
Borrow DVDs
What I would like to do is when I am viewing a member's details, if I click a button 'Borrow DVD for Member', the member's ID number transfers over to the Borrow DVDs table in the Member ID which also would hold some information from the DVD Information table, but I'm sure if i can figure out how to do this firstly, I will be able to apply the same rule and work it out myself.I have been trying to use a query statement like;
INSERT INTO [Borrow DVDs].[Member ID] [IN goodstuffvideos.mdb]
SELECT [Member Information].[Member ID]
FROM [Member Information]
but that has been coming up with error codes and completely not working.
Borrow DVDs table fields are: Borrow ID, Member ID, DVD ID Number, Hiring Fee, Borrowing Limit?
DVD Information table fields are: DVD ID Number, Title, Rating, Hiring Fee, Borrowing Limit Member?
Information table fields are: Member ID, Family Name, Given Name, Address, Town/Suburb, Postcode?
The error coming up is; Error in INSERT statement. Unable to parse query text.And under that it says The query cannot be represented graphically in the Diagram and Criteria Pane.
I want to extract a field (field name is variant, i.e. depend on what the user's choice) from a table using sql statement. How do I do that? Do I have to declare some variables?
View 4 RepliesI have a database and I wanna select a field ..I usually do this with access:
dim chosen as string
chosen = textbox1.text
Dim querysql = "select * from table where field = " & chosen & ""
But with SQL it doesnt work =S I really need to make this work .
I've got a table that caches calculated values for certain dates. I want to use LINQ to select all rows where the calculated value fields are null.But when I use isNothing I get an error that LINQ can't translate this into T-SQL. Is there a way to select null values with link, like this...?
Dim var = From rec As Record In myDataContext.Records Where IsNothing(rec.calculatedValue) Select rec
Other posts on stackoverflow mostly discuss how to avoid or check for null values with LINQ.
Note: I can't just set cacluatedValue's default to -1 to flag records whose calculated value has not been set (and then select those records) because I run queries that sum/average the calculated values. Selecting nulls seems cleaner and less bug-prone.
Select All Text In A Form Field On tab in vb
View 4 RepliesI need this for displaying in my crystal report here's my
cmd.CommandText = "Select * from pos where date= '" & datetimepicker1.text"'"
and nothing displays on my crystal report, I need the right query for that...the field value is DATE...I need the conversion for the 1/11/2001 format from date time picker to 2001-1-11 in DATE field
This is the only code I could find and it doesnt work:
Private Sub DataGridView1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseUp
Dim pt = New Point(e.X, e.Y)
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I am trying to pass a variable or find someway of displaying data in a datagrid that is based on a textbox.text field in a form.
I have a form that holds Customer details. I want to show relating data in a datgrid on the same form that will vary depending on what customer is selected.
This VS2008 Windows form.
I need this for displaying in my crystal report here's my code:
Code: cmd.CommandText = "Select * from pos where date= '" & datetimepicker1.text"'" and nothing displays on my crystal report, I need the right query for that...the field value is DATE...I need the conversion for the 1/11/2001 format from date time picker to 2001-1-11 in DATE field
I need to use .Select and filtering year on a date field,how can this be done,the next code give me error : the expression contains undefined function call year() vb.net For Each wRwTmp As DataRow In wTblC.Select("year(start_date)=" + wYear.ToString)Next
View 11 RepliesI just started using VS 2010. This product is supposed to be so much better than VS 2008 yet I'm noticing a couple of glaring things that are failures if you ask me.
1. When designing a Gridview, after having clicked on Edit Columns, in VS 2008 I could select the first field listed on the left side of the window, set a property--say headStyle-- and set the Horizontal Align to Left. Then if I clicked on the next field, that same property would still be selected on the right side of the window. In VS 2010, I have to go through finding the property and then expanding it and selecting it for each individual field. While it seems like a small thing, it's time consuming and kind of a pain. Is there some reason they couldn't have made it behave the same as in VS 2008?
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I understand that within a rich field text box you can search for a string and then format that string, but I am looking to change the formating of a certain position in a string regardless of what character is at that position.Can this be done in VB 2008?
View 3 RepliesI had a dataSet which link to a database. I need to add one field inside the database, After adding the field, how can I update and link it to the dataSet?
View 4 Replieshave a table with following fields
Emp_id varchar(50)
Emp_Name varchar(50)
Emp_surname varchar(50)
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I have a table which contains a list of products for a company. They input data about how much stock they have and also the level at which they want to be reminded that they need to order new stock.
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I want to list all the true results in a form which the user is then able to navigate through. What would be the best way to go about doing this?
I am making a window based application in vb.net. Now i have work in two sql databases, so i when the window opens it will show two databases..when i select first db then i can work in that particular db only..if select 2nd db then i can work in second db only..how to do that?
View 1 RepliesI am trying to display value of the field ("UserID") for every row exists in datatable to checkboxlist(make the checkboxlist item selected).
I used for loop, but only the field value from last row of RoleUsers table is selected in the checkboxlist.
Here is my code
Private Sub DisplayRoleUser()
Dim conn As SqlConnection
Dim cmd As SqlCommand
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I'm trying to make an appointment scheduler here. The table has an AppID column which just increments 1 every time a new appointment is added. That works fine. It also has an ID column that gets a unique doctor ID assigned to it so the program knows which doctor has which patient.
Now, when I try to add a new row, no matter what I try, the ID field gets a -1. I've tried assigning it the doctor's ID that I'm currently browsing as well as hard coding it to be a "3" and it still shows as -1. So this means that while it [B]does[/B] save and update the new row, it adds that -1 in the ID column and thus the program can't tell which doctor has it so it won't show in my program. I don't know if this is because I've tried so many data sets that it's getting them confused or what, but here is the code that I am using to try to save this:
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I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
View 2 RepliesI am currently writing a VB .NET application where I am trying to open 1 database, create a select statement and then post the results into another database file using Microsoft Access database 2003.
The code seems to stop executing at the statement cmdJetDB.ExecuteNonQuery()
I am using the following code:
Dim conn1 As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data source=C:Sample.mdb")
Dim conn2 As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data source=C:db2.mdb")
conn1.Open()
conn2.Open()
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Question: What is it that I am not doing. I opened both connections, stated my two SQL statements, yet it is still not working. I really need to get this application working. Please Help.........
I have a form with a button that says "Open CSV".I want to be able to click that button. Then browse for a .CSV file, and after I select the file, populate a combobox with all of the headers of the .CSV.I would then be mapping these headers to fields in my database, then import the .CSV data into my database.
View 3 Repliesi have a table name product , when i m inserting data into product i need to first check if Product Name already exist in database if yes i want to exit. basically i want to know how to get data from the database and how to access columns in asp.net .
View 4 RepliesI have a database called NurseLocationI have a table called CoverList with two fields UserId and CoveringI can connect to the database fine and read the fields into variables that I can use in my program. w I want to take an existing variable called userFullName and put it into the Covering field where the UserId is = to "LHV"This is my code on button click to do that.But I was told I shouldn't use INSERT because it creates a new field
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Declare variables and get username from active directory
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How to sum the number value(textbox) to my database field ?
the red section doesn't sum the value(textbox) to my data field.[code]...