Sql - Inserting Variables Into A Query String - It Won't Work
Apr 22, 2010
Basically i have a query string that when i hardcode in the catalogue value its fine. when I try adding it via a variable it just doesn't pick it up.This works:
Dim WaspConnection As New SqlConnection("Data Source=JURA;Initial Catalog=WaspTrackAsset_NROI;User id=" & ConfigurationManager.AppSettings("WASPDBUserName") & ";Password='" & ConfigurationManager.AppSettings("WASPDBPassword").ToString & "';")
This doesn't:
Public Sub GetWASPAcr()
connection.Open()
Dim dt As New DataTable()
Dim username As String = HttpContext.Current.User.Identity.Name
[code]....
When I debug the catalog is empty in the query string but the WASP variable holds the value "WaspTrackAsset_NROI"
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Dec 20, 2010
I am wondering how to replace two variables in a query from selections that the user makes. One variable is chosen by a combo box called cboYEARMONTH and the other is selected from a list view called employeeListView. I know that I can use .replace to insert the YearMonth into the string but, how do I also replace the EmployeeID in the query string?
[Code]...
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Jul 22, 2011
[code]Myself and a coworker have stared at this quite a lot and we can't figure out why it's not working. The problem is in the value for @ID (since it still works when I leave the other one parameterized). The funny thing is, Just a few lines of code above it I have a different query that sets a parameterized value for the same ID, using the the same choices list that the For Each loop is getting the match variable from.Choices is a list of longs, and when I use choices(0) to parameterize ID in a query, it works. But now down here in this loop I have the new match long, and it doesn't want to make it work for me.
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Dec 11, 2011
Last year (2010) I came across a FANTASTIC command that allowed me to take a string of variables with a common delimiter and break it all back out into separate variables (possibly an array) with one statement.
[Code]...
As long as the delimiter was a unique specifiable character, this one-statement command could break it out into elements. my memory and point me in the right direction.
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Oct 4, 2010
I have the following code:
Code:
Imports System.Data.SqlClient
Public Class Form1
Dim ReturnValue As Object = Nothing
[Code].....
which should return back the next available sunday to me from the database. What I'm getting back is 01/01/0001 - 01/08/0001.
I've tried a couple of versions of this but they all produce the same date.
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Apr 17, 2011
I am working in VB.NET08 and Access Database. Generally we send or update a Value into a Column in a Table through any control like TextBox or Combobox...etc.
Ex:
rscitycountry.Fields(1).Value = Me.cmbpersonalcity.Text
rscitycountry.Fields(2).Value = Me.cmbpersonalstate.Text
rscitycountry.Fields(3).Value = Me.cmbpersonalcountry.Text
But I need to send a Value or Insert a Value in a Column through Condition. So I wrote a SQL Query for that. By Using this SQL Query I want to insert a value in a particular Column. How can I Update This Column Value in a Table? My SQL Query is :
"INSERT INTO tblPersonsInstitute(InstituteID) SELECT tblInstitution.InstitutionID from tblInstitution where tblInstitution.InstitutionName=" & Me.cmbInstitute.Text & " "
By using the above Query How can I Use? Where I can update??
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Jan 28, 2011
DB/Reporting :: Access Insert Query does not inserting
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Oct 19, 2011
I'm getting an error on my index simply setting a string field prior to using it and entering the loop. When I set this field within the loop I get a error still. how to go about Inserting records based upon a query in vb .net? The following is the code that I have:
Public Sub Insert_RunsizeUPCs()
Dim Command As SqlCommand
Dim adapter As New SqlDataAdapter
Dim dsin As New DataSet
[code]....
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Sep 2, 2010
I have a form showing a datagrid that is filled with info from an Access database table. The table only has 3 fields: two of them are string type and the third one is boolean. The first String type field is also the primary key (this field is called "clave"). This datagrid is supposed to let the user select one of the rows and then click on a button to delete that row. I'm trying to do that with the following code:
[Code]...
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Apr 30, 2010
I have a form showing a datagrid that is filled with info from an Access database table. The table only has 3 fields: two of them are string type and the third one is boolean. The first String type field is also the primary key (this field is called "clave").This datagrid is supposed to let the user select one of the rows and then click on a button to delete that row. I'm trying to do that with the following code:
[code]...
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Apr 11, 2011
I am using vb.net and sqlite as database. I am using below scenario to insert multiple records in database using a single query.
INSERT INTO TableName (FirstCol, SecondCol)
SELECT 'First' ,1
UNION ALL
SELECT 'Second' ,2
UNION ALL
SELECT 'Third' ,3
[Code] .....
For less records it is working very well.But when I am inserting about 800 records at a time, executenonquery is throwing the following exception:
SQLite error
Too many terms in compound SELECT.
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May 3, 2010
Insert Query for inserting date into access from masked text box in vb.net
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Feb 13, 2012
I am making a game that involves moving picture boxes automaticly i can get the boxes moving but I need them to be object orientated but when I try to make it a class i am not to sure how to declare the veriables to make it work. [code]
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Aug 12, 2008
I have a DataGridView of which is being populated via a table adaptor.
I can populate it with a query where the value is statically assigned in the query.
What I'd like is a textbox where I can type in a variable for the query and then populate the datagridview.
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May 5, 2011
I get what I'm supposed to do, and this is my 9th project in this class so I'm not new to the coding and how it works, but for some reason I'm having a hard time wrapping my mind around the multidimensional array and the variables to get the program to work. Here is the first part of the instructions I was given for the project:
Write a program that will determine the cost of a Yacht rental based upon yacht type, the size of the yacht and the number of hours the yacht is rented. There are three categories of yachts: Ranger, Catalina, and Excalibur; and three yachts sizes: 20 feet, 30 feet, and 40 feet. The rental cost is the yacht price multiplied by the number of hours rented. Create an array to hold the rental prices.
RangerCatalinaExcalibur
20 feet 95.00105.00125.00
30 feet110.00130.00150.00(prices per hour,
40 feet120.00145.00180.00 multi-dimensional array)
Use a data structure that contains the following fields: yacht type, yacht size, price per hour and cost of the rental. Limit the number of transactions to 20. Each time the Calculate Price button is pressed, look up the rental price from the price array and display it on the form along with the rental cost. Add the appropriate information to the data structure to create a transaction history.
Here's my code, the top with the variables:
vb.net
Public Class YachtRentalMainForm
'Variables
[CODE]...................
And here's my calculate button code where I'm having the most trouble:
vb.net
Private Sub CalculateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CalculateButton.Click
[CODE]......................
I'm not getting errors anymore thankfully, but when I run the program... I choose my yacht type and size and input hours, it doesn't matter how many hours I put in - the price doesn't change. I know I'm missing something, maybe I've just been staring at it too long and need a fresh set of eyes to give it a look over and tell me what I'm missing? It also isn't calculating properly. 40 foot excalibur is supposed to charge $180 per hour and instead it's charging $125 flat rate.
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Nov 4, 2009
I am making a calculator at the moment and the plus works and so does the minus well the minus does the FIRST time but not the time after that.you would normaly get 2, but instead it says that the answer is -3.I have attached the calculator so that you can have a look.
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Nov 19, 2010
I have two forms and I'm trying to pass a declared variable from form1 to form2 and then pass that variable in a sql query that I have in a dataset that is bound to my form. I know that my query works but it's not producing any data. I have debugged my form and can see the data being passed in the variables elsewhere on the page but I'm not sure of the syntax within the query.
[Code]...
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Dec 8, 2011
I have the following class which I want to serialize to XML:
[Code]...
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Feb 18, 2009
I'm having issues w/ querying the database w/ user selected dates. Hardcoded everything worked fine but when I started to use the DateTimePicker things stopped working.
Dim sqlcn As New SqlConnection(db.dbcn)
Dim cmd As SqlCommand = sqlcn.CreateCommand()
cmd.CommandText = "SELECT * FROM TABLE " _
& "WHERE CHK_DT BETWEEN @BeginDt and @EndDt"
[Code]...
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Mar 15, 2012
I am finding it exceptionally difficult to pass an sql query result (string) into a variable.No matter what I try, I can't seem to get anything but boolean output from my reader function.I need to obtain staff "account type" from my staff table and then define that account type in a variable.
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Apr 26, 2011
I added queries to my dataset via the designer. Is there a way to use variables in those queries?
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Aug 23, 2011
Will the list in this shared method keep its state throughout the life of the method? Or will a new list be created every time this method is called?
[Code]...
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Mar 30, 2012
This is my first attempt at writing a program that accesses a database from scratch, rather than simply modifying my company's existing programs. It's also my first time using VB.Net 2010, as our other programs are written in VB6 and VB.NET 2003. We're using SQL Server 2000 but should be upgrading to 2008 soon, if that's relevant.I can successfully connect to the database and pull data via query and assign, for instance, the results to a combobox, such as here:
[Code]...
How do I execute a query so as to assign each field of the returned row to individual variables?
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Dec 29, 2010
In my program I have a combo box that the user selects a date from and a list view that the user selects an employee ID from. How do I properly design my database query string to use both the date selected and the employee ID selected? The date is stored in a variable called YearMonth and the employee ID is stored in a variable called EmpID.
Here is what I am trying to do with my query:
Dim ExactQuery As String = _
"SELECT * " & _
"FROM[JobTypeExact_Query] WHERE (EMPID = ?) AND WHERE (YEARMONTH = YM)" 'Define Exact job type query
[code]....
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Sep 2, 2009
I have read through soem other threads on this site and it has gotten me this far, but I can't seem to get over the hump.I am trying to create a table to reports back the proper data from a sql database based on what a user types in a textbox. I have pulled a dataset that i have already setup onto the tabl.
Public Class robsearch
Dim sstring As String = "1234"
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code]......
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Oct 1, 2009
I am creating an ASP.Net page with VB.Net codebehind. I am using a class variable to hold data (named ods see below) from a SQL Server query so I do not have to keep going back out to the server. The class variable gets loaded ok and I populate a grid data with this dataset. However when I need to go back in and reference the dataset again, I get an error and I come to find out my dataset no longer holds the data.
Here is my declaration in my code behind:
Partial Public
Class LotTrackingMain
Inherits System.Web.UI.Page
Private con
As SqlConnection =
Nothing
Private ods
As
New DataSet
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Sep 1, 2011
I am trying to get a query to work with Visual Basic 2010 Express addition I have pasted the code below but it just errors out with to many arguments I have taken this sample from a reference book but cannot get the darn thing to work. I have looked all over the net and Microsoft for a solution but still no go if any one can help it would really be great. BEP
Private Sub FillBypeeps1ToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FillBypeeps1ToolStripButton.Click
[Code]...
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Jul 2, 2009
I got this code in order to build an url for the link using a querystring from the current page. The problem is.... It doens't work.
[Code]....
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Mar 11, 2010
I am trying to read data from remote SQL base. I have written the function that works great if you need to get 1 Value , but when I want to read 2 or more value at from one query it doesn't work [Code]
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Jun 11, 2011
When I'm trying to run this program Sql QUERY doesn't work properly , but the month and day are okay but it comes to year it doesn't work...
Dim strSql As String = "SELECT * FROM tblAudit WHERE Date_Time BETWEEN '" & Format(dtpFROM_F.Value, "MM/dd/yyyy") & "' AND '" & Format(dtpTO_F.Value, "MM/dd/yyyy") & "'"
classLibrary = New ConLib
classLibrary.openConnection(strConnection)
lblconstat.Text = DatabaseStatus
If Not classLibrary.isconnectionopen() Then
Exit Sub
End If
classLibrary.initializeCommand(strSql)
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