is there a limit on number of logical "AND" usage in SQL SELECT? I used 4 in my code and it gives me a result but when I added one more, I dont see any error message but I didn't get any result when it should my give me a result.
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How do you limit the CPU of a while loop?
In this case, the code which is inside the while loop[code]...
I'm programming a windows services that is in charge of generate reports based to users request.for each user request I create a thread with next code:
hiloSolicitud = New Thread(AddressOf GenerarReporte)
hiloSolicitud.Start()
wherein GenerarReporte is a method that generate a report. I used threads because there are many users request.My problem is that when windows services has many users request the memory usage is to up 2 GB.that's the rest of memory possible, without count the memory for Operating System.In this case the windows services doesn't process any more request or reports because haven't more memory to work.so that when there are requests for large memory usage are processed but also allow the service of process windows of less use.I Want to limit memory usage for each thread.
Get the current number of usage days, unique usage days, etc in an evaluation license using CryptoLicensing Generator.
View 1 RepliesI am working on an application that has a number of forms in it, doing asynchronous comms with a "radio network" over a serial port.To handle replies from the network in the appropriate form, I am using RaiseEvent. As time goes on, I seem to be needing more and more events. Is there a limit to the number of events that can be firing off at the same time?
I understand that computers can't actually do several things simultaneously, but obviously while the code triggered by one event is still running, another one might fire.
Is there any limit on number of classes that a namespace can have in .net ? Further what is the recommended number of classes that there should be in a namespace?
View 8 RepliesHow could I limit the random number range? For instance, limiting the number within the range of 1-100.
View 5 Repliesive done a bmi calculator bbut the end result has 4 or 5 decimal places when i only need one. how do i limit the number of decimal places
View 3 RepliesIs there any way/property to set BackgroundWorker to execute only x number of threads?
View 1 RepliesI'm trying to limit the number of decimal values to 3 in numbers such as .3125 but I also have numbers such as .5 which I need to leave as is.
how can I determine if a number is 4 decimal places and cut off the last number.. I don't want to round up either.. .3125 should be .312 not .313 and .5 should stay at .5 and not .500.
In my datagriedview i have 5 column called T,C,F,S and H.I want to specify in column C that the user must enter 3 digit. For column H the maximun value should be 2000 so user should not enter more than 2000.how i can specify this condition for my datagriedview column?
View 2 RepliesIn my datagriedview i have 5 column called T,C,F,S and H.
I want to specify in column C that the user must enter 3 digit. For column H the maximun value should be 2000 so user should not enter more than 2000.
how i can specify this condition for my datagriedview column?
I have wrote the code for a number guessing game. But cannot for the life of me think of how to limit the amount of guesses a user can have. This is in Console Application.
Module Module1
Sub Main()
'This program plays a simple number guessing game.
Dim RandNum As Integer
Dim RandomGenerator As New System.Random
[Code] .....
I have a UI that uses datagridviews / bindingsource / datatables of typed dataset for data entry. The dataset itself is serialized to a varbinary(max) in SQL. (i.e. no tableadapter, backend schema).I would like to limit the number of rows the user can enter into some of the grids (the data is used to fill PDF forms and I don't want them entering more rows than the forms can accomodate.).I have subclassed the datagridview, added a rowlimit property and tried to manipulate the AllUsertoAddRows property
Imports System.Windows.Forms
Public Class dgv
Inherits System.Windows.Forms.DataGridView[code]......
The behavior I see is that the messagebox comes up after leaving the max row even when the user is trying to leave the grid. I can lose the messagebox and deal with notification some other way but I thought someone else may have come up with something a little more sophisticated to handle simply causing attempting to add to many records to navigate out of the grid to the next UI control.
I am a new VB programmer and am using TextBox in VB2008. Here are the problems I experienced in TextBox -
1, After I typed number in TextBox and found I need to type another number. So I used backspace key to remove it. But at this time program quit and displayed this problem: InvalidCastException was unhandled. How to solve this issue?
2, Can anybody tell me how to set number of characters are allowed to be typed in TextBox?
3, Can anybody tell me how to implement the feature that only numbers are allowed to be typed? In case letters are typed, how to tell user to re-type?
i am trying to auto select the email value from a 2nd cbobox when the user selects a name from the first cbobox using the first cbobox's index. (the values all line up with each other just fine)This is my current code:
Private Sub cmbAnalyst_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbAnalyst.SelectedIndexChanged
theAName = cmbAnalyst.Text
[code].....
how can I get the CPU usage in % of a server not for each process but for the server itself?
View 7 RepliesI am loading data from a Textfile into a datagridview. I want to limit the amount of rows created at any stage to 9. How can i do this?
View 2 RepliesI need some help on merging 2 tables. A simplified version of the issue and the error is outlined below. I am doing the following steps: 1. Create & Fill the schema of the table TblA by an adapter. TblA = DSTasks.Tables.Add("A") AdpA.FillSchema(TblA,
[Code]...
How do I limit the number of characters per each line of an RTB to 1 char per line? That is you type one character, after that the textbox should not accept further input on that specific line.-Knock knock -Who's there? -(looong pause..) Java
View 1 RepliesI am trying to run a nested loop; it should call a result from a MDB database. Which it does, when I run the single loop it goes thru all of the entries. But when I try to get a number to display twice it stops on the second entry. Having it display the number twice is just a test to make sure it does work, I am going to modify it after I can prove the loop works. The count on the Message Box is correct, but the number displayed is wrong?I want it to display each number twice and then move on to the next number. [code]
View 2 Repliesi have a website, and a combobox how can i select value number 3?
View 1 RepliesThis update command works in updating my mysql database. Another database I have doesn't have a idnum field. I'm looking for a command to select a row number in the database. For example, update row #5. How would I modify this command?
SQL = "UPDATE " & table_name & " SET " & _
"title='" & TextBox3.Text & _
"' WHERE idnum =" & TextBox2.Text
Did anyone else read this article under Visual Basic News? I thought it was a very bad treatment of the subject. I especially don't like articles like that when the code they post relies on Option Strict Off.
View 12 Repliesi'm trying to find a way to get with vb.net info regarding logical drive such as: Total Size, Free Size and Volume label ame and to write the info to some textbox or somthing similar.
View 8 RepliesSorting arrays are useful when you want to get the first/last/min/max logical item of a list. I.E. A list that contains numbers and you want to find the Min/Max (without LINQ), you can sort the list and pull the first/last element. It's also useful to display lists to the user in alphabetical order.
View 2 RepliesAccording to MSDN The And operator can act as a bitwise operator OR a logical operator.The only way to know if it is used as One operator or another is, If it is on the right side of an assignment operation? for example x = 3 AND 5. I cannot find any other instances where the bitwise operator would be used instead of the logical operator, are there?
View 1 Repliestrying to calculate the partitions for 8 portions, and putting in select statement for row number,something like,
If Not (dstotal.Tables(0).Rows(0)("totalrecord") = 0) Then
dPartition = CInt(dstotal.Tables(0).Rows(0)("totalrecord")) / 8
End If
[code]....
I have not worked with VB in so long that I might as well be a newb.I know this can be done, and if I remember correctly, it is fairly simple, but for the life of me, I can't remember how.I have a textbox that will be used for entering a number.I have a combobox with a list of precreated options.I need to create the combobox as many times as the number entered in the textbox. Essentially I'm creating a list of items, the number of which is determined by the textbox value, the values of which will be chosen from the comboboxes. This means that the comboboxes all need to be linked as a group with sequential numbering.
View 1 Replieshow would you select a row in a datagridview if the number of rows = 1
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