I have a simple vb script which extracts some data from our accounting software to a text file. It works fine when I do not use a variable in my select statment as follows:
xselect = "SELECT SourceJournal,JournalRegisterNo, PostingDate, PostingComment,UserCreatedKey
FROM GL_DetailPosting
[Code].....
How do I fill the variable in my SELECT statement?
Private Sub TabPage2_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles TabPage2.Enter
strTenantPin = tbxTenInfo_Pin.Text
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I'm relatively new to VB. I want to perform a SELECT statement that uses a variable to return a value, example;
mysql> SELECT room_description FROM room_descriptions WHERE current_room = 'someVariable';
And display the result in a TextBox i.e. TextBox.text = someVariable.
So how do I perform a query from VB that passes a variable? How do I assign the result to a variable?
I am using OleDb, trying to do this:
Dim d as Date = DateSerial(Year(rptDate), Month(rptDate), 1 - 1)
Dim conn as OleDbConnection = new OleDbConnection(connStr)
Dim cm as OleDbCommand = new OleDbCommand()
[code]....
I know that d is the same date as the one in SQL server, specifically 3/31/2011 12:00:00 AM.
I have the following SQL:
[Code]...
I want to put it (the select count statement) in this LINQ statement so I can get the sales count in my linq statement: Dim TheLeads = (From L In DB.Leads Where L.IsDeleted = False Select L).ToList() Is this possible to do in LINQ?
A co-worker wants to convert the following IfThenElseIf statement into a Select Case statement.
Explain why this is not possible.
If temperature = 100 Then
X = 0
ElseIf population > 1000 Then
X = 1
ElseIf rate < .1 Then
X = -1
End If
Say that i have the following code that parse about 20k records from the DB.
Code #1
vb.net While reader.Read()
list.Add(If(Integer.TryParse(reader(0).ToString, 0), Integer.Parse(reader(0).ToString), 0))
End While
And then another code which does the very same thing but it seems to be a little cleaner.
Code #2
vb.net While reader.Read()
Dim storeowner As Integer = 0
Integer.TryParse(reader(0).ToString, storeowner)
list.Add(storeowner)
End While
This is what i am confused about; does the compiler creates a new variable automatically when i use the if statement without strictly declared variable? What approach is better in sense of performance?
have a table with following fields
Emp_id varchar(50)
Emp_Name varchar(50)
Emp_surname varchar(50)
[code].....
I need to use a SELECT statement to select all data under a column name (like all employee names) and then to add the values to a listbox.
I usderstand that the select statement must be:
"SELECT * FROM EmployeeTable WHERE EmployeeNames LIKE *" (at least I think)
but then what? combobox1.fill ("EmployeesTable") ?
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?
with the following code which gets stucked on the line of reader = Cmd.ExecuteReader(). It says the SqlException was unhandled (An expression of non-boolean type specified in a context where a condition is expected, near '7/2/2010'.)
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I have successfuly connected to a database and have create a select statement (with access) which works most of the time except when im trying to perform a where statement with a date:
strEmployeeDepartmentLocation = Application.StartupPath
con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = " & strEmployeeDepartmentLocation & "swineFlu.mdb"
strSQLSelectQuery2 = "SELECT NumberOfCase FROM table1 WHERE Date = 21/04/2009;"
i dont no if im writing it in the wrong format or what but it dont seem to bring back any data
I have a datatable and I would like to get the MAX number from this table where Term Number (first Column) is a certain value. If my datatable is declared as dtMyTable, I'm assuming I need to use dtMyTable.Select(), but I'm not sure if this is the best way.
View 2 RepliesI'm using Vb2005 and Db MS access Is it possible to use tow Select in same sql Statement like this example:
Code:
"Select....Select......."
I have 2 dropdown lists, 1 label & 1 textbox.on selection of 'product categories' @ 1st ddl, 2nd ddl displays all product categories.question is, how may i display the product category id @ the label, and name @ the textbox, on load/selection of 2nd ddl?[code]....
View 3 RepliesIf I have a datatable with 5000 rows for example can I do a select statement by row numbers. like paging throught it so I don't have to display all 5000 in the datagrid.. i want to go forward and back by 100 rows
vb.net 2008 (vs 2008)
For example:
dgInbox.DataSource = dsInbox.Tables("Inbox").select(between rows 200 and 300)
I have a sql statement
SQL = "select * from Candidate where test_date = " & TextBox2.Text
I am getting error in the line myDataAdapter.Fill(myDataSet)
Conversion failed when converting the varchar value '03/15/11' to data type int
In my sql server test_date column data type is varchar.
I am tryin to access a 2003 Microsoft Access Database using VB in an OleDb format. The database file name is Billings.mdb and there are 3 tables in the file the one I am trying to access is tbl Clients. When debugging the program I continue to get an Unhandled error point to the FROM part of the SELECT statement. It continues to occur regardless of my attempts to vary the input.
In the program my connection statement is as follows:
Dim connectionString As String = "Provider = Microsoft.Jet.OleDb.4.0; Data Source = C:Documents and SettingsTrialsBillings.mdb"
The Select statement is as follows:
Dim selectStatement As String = "SELECT ID, ..., PB " & "FROM tbl_Clients " & "WHERE ID = ?sngID"
Basically, I have the following sql select statement in vb.net.[code]...
From the above statement, I would like retrieve several data and the count of Traceid from trn_Invt_Details where the traceid in trn_Invt_Details match with traceid in trn_Invt. By the way, it will also based on the criteria where the field of ErrorType in Trn_Invt_Details is Null or contain empty string. Then it will retrieve out the count of traceid.Finally, all the results will save to dataset in vb.net
What's wrong with this ?
ERROR: Type mismatch in expression.
conectare_db()
data_table = New DataTable[code].....
I just replaced a different segment of code with the select case statement and it works fine. However I don't understand what the dim is for after you do "Select case [variable name here]"
I currently just dimmed a value as nothing. I didn't specify any data type for my variable I'm using for this case statement. But it works.[code]...
I am using vb.net 2005. I am trying to select data from a table where the field [hoteldate] is 2 days from now. The field's format is MM/dd/YYYY and when I use the Where clause :WHERE HOTELDATE = DATEADD([DAY], 2, GETDATE()) it returns nothing. I am assuming it's because the getdate() function returns something like 2012-24-02 T blah blah. How do I convert so I can get a match? I've tried several things including converting do a
View 4 RepliesI have a select statement, this select statement comes back on a slqadapter, would l would like to do is like
textbox1.text=sqladapter.(columane1)
textbox2.text=sqladapter.(columane2)
and so forth instead of filling a datagrid.
I'm using the following statement to search an Excel file. It specifies Sheet1$ and I would like to do a search that included another 12 sheets. Is there syntax that allows a search across several sheets?
View 13 RepliesI was using an If block to see if a line in a file contained a specific string. But I need to look for many different string and do different things based on each. So I don't want a million nested If blocks. So I decided to use a Select statement. But, I can't figure out how to use .Contains with it. If I do .ToLower.Contains, like I did in the If block, it stops me.
VB.NET
For Each _line In lineList Select Case _line.ToLower
[code].....
I have a bunch of chart controls - Chart1 to Chart6, each chart is in a different tab control.
When a particular chart is selected I need to format the titles/legends etc.I've been using this:
With Chart1
.Series("Series1").LegendText = "legend"
etc etc
End With
I have a if then else if statement to check the value of a combo box then assign a variable depending on the combo box value. The problem is that the variable in the if then statement never gets assigned and then when I call it later in the program out side the conditional statement I get this warning. Variable 'srtype' is used before it has been assigned a value. A null reference exception could result at runtime. here is the code.
error
Dim srval As String
Dim type As String
Dim srtype As String
[code]....
I know i must use Stored Procedures as much as Possible, but i would like to know the following.
A: Can i get a SQL Injection attack from a SELECT statement such as (Select * from MyTable) ?
B: Also, can i get a SQL Injection attack when I use the SQLDataSource in ASP.NET?
I've got the following that has got multiple values of a particular variable and I don't want to stack up to a lot of IF ELSE statements to handle them, so I'd be grateful if some one could very kindly modify the code by using the SELECT CASE statement. Also, I'd like dgMarksEntry.Item(7, i).Value and dgMarksEntry.Item(8, i).Value to handle RANK and COUNT the number of items entered respectively. [Code]
View 2 RepliesI'm trying to check whether a Username and Password exist in my MySQL database and if so I need to return true, otherwise false. This is what I have atm:
myconn.Open()
Dim selectSQL As String = "SELECT *
FROM member
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